My DH and I did this last week. The said all the Jeeps were standard but we had an automatic. They split you up into groups of four, one person drives on the way, someone from the other party drives on the way back (if they want). You stop at the "Pee-Pee Station" (yes that is the name), for a last bathroom stop (also a sounvenier shop). You drive for about 30 minutes, and when you go off-road is is EXTREMLEY bumpy. I would not recommend this for anyone with a bad back, etc. You stop at one of the ruins for about 15 minutes, then off to the beach. They have umbrellas and blankets already spread out (one umbrella per jeep). The water was great! They serve you a Mexican-style lunch and soda. They also take pictures when you first leave and at the beach. When you stop back at the store on the way home you may purchase the pictures ( they were very good, we got both of them.)
This trip made for a great afternoon. Everyone that went (about 25 of us) had a great time.