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Arizona · Statutory claims only, under A.R.S. § 4-311
Arizona Dram Shop & Bar Operations Expert Witness
Ryan Dahlstrom accepts hospitality and entertainment expert-witness engagements in Arizona. 35+ years of hands-on experience in bars, restaurants, nightclubs, hotels, live entertainment venues and special events — retained by attorneys representing plaintiffs and defendants.
In short
Ryan Dahlstrom is a hospitality and entertainment industry expert witness who accepts engagements in Arizona. He has more than 35 years of hands-on experience in bars, restaurants, nightclubs, hotels, live entertainment venues and special events, and is retained by attorneys representing plaintiffs and defendants. In Arizona matters he evaluates hospitality and venue operations, alcohol service and overservice, bar and nightclub operations, restaurant operations and management, security operations and negligent security, premises liability, event management, event security, event and stage safety, and surveillance video analysis. His opinions address operational standards — alcohol-service practices, staffing, training, supervision, policy and procedure, security, crowd management and incident response — measured against hospitality industry standards. He does not offer opinions on the law, engineering, toxicology or medical causation.
Alcohol Service
Dram Shop and Liquor Liability in Arizona
Statutory claims only, under A.R.S. § 4-311
A.R.S. § 4-311 makes a licensee liable where it sold alcohol to a person who was obviously intoxicated or to a minor, that person consumed the alcohol, and the consumption proximately caused the injury.
The statute defines the standard: a person is obviously intoxicated when they are inebriated to the point that physical or mental impairment is obvious to an ordinary observer — physical uncoordination, serious physical dysfunction, slurred speech. It is an observational standard, decided on what was visible in that room.
Arizona limits dram shop liability to claims brought under § 4-311. The common-law dram shop action recognized in Ontiveros v. Borak (1983) was foreclosed by the legislature through A.R.S. § 4-312(B), and in Torres v. JAI Dining Servs. (Phoenix), Inc., 536 P.3d 790 (Ariz. 2023), the Arizona Supreme Court held that this did not violate the anti-abrogation clause of the Arizona Constitution (art. XVIII, § 6), because dram shop actions were not recognized at statehood. The practical effect is that the statutory route under § 4-311 is the route, which places the weight of the case on what staff could observe and what the operation required them to do about it.
This summary is general information for counsel, not legal advice. Statutes, regulations and case law change; counsel should confirm the law in effect on the date of loss. Ryan Dahlstrom's opinions address operational practices measured against hospitality industry standards; he does not offer opinions on the law.
Hospitality Context
Arizona Venues and Operations
Arizona's licensed trade spans Scottsdale's Old Town entertainment district, Phoenix and Tempe college-adjacent bars, Tucson's 4th Avenue, resort and golf-club food and beverage across the Valley, and a large seasonal pool and day-club operation where heat, hydration and service pace change the intoxication picture materially.
Evidence
What Ryan Reviews in Arizona Matters
- Service and POS records correlated into an operational timeline.
- Surveillance video across the service period, reviewed for observable indicators and reconciled against records and testimony.
- Training and certification records for the staff actually on shift, measured against the state's server-training scheme.
- Written policy and procedure — and whether practice matched the document.
- Staffing, supervision and deployment at the relevant time, including security posts and ratios against actual occupancy.
- Incident reports and prior-incident history bearing on foreseeability.
Scope
Areas Ryan May Be Retained On in Arizona
Where relevant to the matter. Ryan is retained by attorneys representing plaintiffs and defendants; opinions follow the facts and the applicable standard of care, not the retaining party.
Hospitality
- Hospitality operations
- Hospitality management
- Venue operations
- Hotel operations
- Management practices
- Policies and procedures
- Employee training
- Operational standards
Alcohol service
- Dram shop
- Liquor liability
- Alcohol service
- Alcohol overservice
- Responsible beverage service
- Alcohol service to minors
Bar, nightclub & restaurant
- Bar operations
- Bar management
- Nightclub operations
- Nightclub management
- Restaurant operations
- Restaurant management
- Beverage operations
Security
- Security operations
- Bar security
- Nightclub security
- Event security
- Negligent security
- Crowd management
- Crowd control
Premises & events
- Premises liability
- Event management
- Event operations
- Event safety
- Event & stage safety
- Special event management
Analysis
- Surveillance video analysis
- Surveillance video compilation
- Incident timeline analysis
- Standard of care review
Availability
Arizona Engagements
Ryan Dahlstrom accepts expert-witness engagements in Arizona and throughout the United States, and has been retained in matters by plaintiff and defense counsel nationwide. The hospitality industry standards that govern alcohol service, staffing, training and security apply wherever a venue operates; what differs from state to state is the governing law and what must be proven.
His case experience includes matters in Texas, Nevada, New Mexico, Illinois, Utah, Washington, California, New York, Kentucky and other jurisdictions, involving dram shop and liquor liability, security, premises liability, hospitality operations, event safety, restaurant management and bar operations.
Questions
Arizona — Common Questions from Counsel
What does 'obviously intoxicated' mean in Arizona?
Can you bring a common-law dram shop claim in Arizona?
Does Arizona pool and day-club service raise different issues?
Arizona Matter Under Review?
Submit a case inquiry for a confidential conflicts check and evaluation. Ryan responds to case inquiries within one business day.