GW,
sounds like we have some things in common. I suggest reading the interview and the hunt threads posted long ago by KingCosta which will teach you the right questions to ask the chicas and what to look for. (I'll dig those up if you can't find them)
But one problem being your first trip is you will not know the jaded regulars from the new faces wandering in or have the experience to spot what you seek. And obviously looks aren't everything. I've learned not only the regulars and ones to avoid but how to spot that new, hot package as soon as she walks in the door. See my latest trip report- last Sat. night one walked in about midnight and I zeroed in on her immediately. She is top-shelf gorgeous and I'd never seen her before and usually can find at least one like her each trip but it does take work- time, effort and knowing some spanish, something most guys don't care bother with while on vacation. She said she only hits the HDR 1or2/month and usually gets 150.00, and I don't doubt it, she's model material. And the hot ones know they're hot and it doesn't take long to get an attitude, luckily she didn't have it (yet).
Most guys like to sit around and drink, waiting for the right one to walk by while a few take the hunt seriously, always keeping an eye peeled for that trophy or fresh face.
Ok, so you spot one of the gems what next- do you speak spanish? A must for the best experience and price in my opinion since most of these hot part timers or "semi-pros" don't usually speak english. Time to turn on the charm, make her laugh, buy her a drink and tell her how special she is while you ignore every other chica around you. If she's not all business and in a hurry take her dancing or for a bite to eat. I know most guys laugh at this but if you get her comfortable with you and show her your a decent guy and at least act interested in a little more than 20 minutes of slobbering over her in the bed it goes a long way.
Being a gentleman pays off big. (I spent about 3 hrs. with my 9.5)
But even if I hadn't met her there are always plenty of sweet, hot ladies to make the trip worthwhile and as TP says the best times are not always with the 9 & 10's but many of the 7 & 8's will rock your world if given a chance, the interview and learning to trust your intuition is the key.