Haven't been to LA in years but loved the Hollywood Spa back then. Not sure what LA has to offer now. Wait for some suggestions but definitely go. They can be fun.
I would mention it before the appointment just so you aren't worrying about it before the door opens. Many mention their race, weight, age to make sure there will not be a problem. It is sad that you have to do it but reality is many escorts or masseurs have certain hangups about race, weight or age.
When you are face down on the table, with your hands by your side, you really don't have good coordination of your arm movements. Trying to touch then gets clumsy and you can end up hitting the masseur in the balls. Not a good way to start off a massage. You don't need to touch him 99.9% of the massage time. Let him do his job if you are really expecting a half way decent massage.
Try to file as early as possible in the future. A friend of mine had his identity stolen for a fradulent tax return. He still hasn't gotten it all straightened out.
If anal sex is to be involved you should clarify before EVERY session that protection HAS to be used even if you've seen the escort 200 times. Some people get caught up in the heat of the moment and do stupid things.
For many men their ego is attached to some part of their body. Whether it is their cock, biceps, ass, face or all the above is their decision. I have known some who go into a depressed state if compliments aren't paid. Their egos need constant stroking.