Travel and Leisure Expert Witnesses: 2

Dennis Gemberling, CHA, CFBE, FMP, FCSI, President and Founder of Perry Group International, has over 35 years of experience in the Hospitality Management industry. His experience includes managing, operating, and consulting on full-service, limited-service, extended-stay, all-suite, condo and timeshare hotels and resorts, casual, fine-dining, and quick-service restaurants, bars and nightclubs, catering and special event facilities, casinos, and mixed-use real estate. 

Mr. Gemberling has held prior positions for different owners, operators, and chains as Senior Vice President, General Manager, Director of Food & Beverage, and Restaurant Unit Manager. He has been retained on over 400 projects with typical values in the $1 million to $75 million range and revenues in the $1 million to $100 million range both nationally and internationally. His many clients have include among others Biscuits & Blues, Cantina’s, Chevy’s, Choice Hotels, Embassy Suites, Hampton Inns, Hilton, Holiday Inns, Hooter’s Casino, Hyatt, Marriott, McDonald’s, Microtel Inn & Suites, Outback Restaurants, Radisson, Residence Inns, Signature Resort, Sizzler, Sonic Drive-Ins, Starbucks, Starwood, Sheraton, Togo’s, Wendy’s, and Willie Mays Skybox Lounge. 

Litigation Support: Dennis Gemberling is a Certified Hotel Administrator, Certified Food and Beverage Executive, Certified Foodservice Management Professional, and Certified Food Safety Manager. He offers expert witness services to attorneys for plaintiff and defendant cases on a variety of Hospitality-related claims. He is a Professional Member of Foodservice Consultants Society International and the Forensic Expert Witness Association. Mr. Gemberling also provides expertise as a Court Appointed Receiver and Interim Property Manager and is currently the Past President and a Board of Director for the California Receivers Forum – Bay Area Chapter. 

Areas of Expertise:

View Dennis Gemberling's Consulting Profile.

Bruce Weiner is an expert in technology, product development, and software engineering with 37 years of experience applying industry-standard design, testing, and post-deployment evaluation methods to determine whether technology products and features achieve their stated objectives.

Through Weiner.net LLC, he has been retained in 25 matters since 2011 across U.S. District Courts, PTAB, state courts, AAA, and NAA arbitration, and a NYC administrative proceeding. Nine depositions. Three trial and hearing appearances — one AAA arbitration trial, one NAA arbitration trial, and one NYC administrative hearing. Three trials are scheduled in 2026 in federal and state courts. Expert declarations cited by name in Federal Circuit opinion, 986 F.3d 1367. Retained by both plaintiff and defense counsel.

Representative matters span gig-economy platform governance, airline and loyalty-program technology, e-commerce and affiliate systems, banking software, AI-weighted model evaluation, SDLC/PDLC governance, and billing substantiation. Opinions anchored to ISO/IEC 12207, ISO 31000, ISO/IEC 25010, IEEE 730, and ISO/IEC 42001.

Since 2012, progressive technology leadership roles at a large financial services institution, most recently Vice President and Chief Product Owner. Princeton BSE, Magna Cum Laude. ACM and IEEE member. Federal Secret Security Clearance — DCSA Tier 5 Investigation (Active).