Entertainment Pavilion - seats 15, for summer concerts. The new tower will have rooms bringing the total. Most new sites will have facilities compatible with the newest vehicles.how to prevent gambling addiction CARD POKER GAMBLING Pechanga Resort and Casino is on the Pechanga Indian Reservation in Temecula, California. To gamble in the state of California guests must be 21, since the age limit changed in from. Pechanga Resort and Casino is an Indian Casino on the Pechanga Indian Reservation in Temecula, California. Pechanga Resort and Casino is the largest casino in the state of California, with 3, slot machines and approximately , sq ft (17, m2) of gaming space. High Limit. Casino Hosts. The Pechanga Resort and Casino has the largest casino floor in California totaling , sq ft. The casino features over 4, slot machines, table games, a non-smoking poker room with tables, and an ultra-modern, seat bingo facility.