I prefer men to at the least, trim...I can get very irritated in certain areas when there is too much friction that isn't just skin-on-skin.  

I always offer a shower, if the gent would like-before & after & with...it can be so much fun...

I prefer extended appointments, but many gents cannot do that, so an hour is fine.  When it is 2 or more, it makes it very easy to get comfortable with you, and the experience can be so much more pleasurable.

As for gifts/tips, I never ask, but am always happy when a gent asks what I like; that is why I have a wish list, because gents sometimes think enough to do a little research before our meeting...

I am always trim, and plan on going back to brazilian waxing, as shaving has been a pain for me as of late...lol...

Hope this helps...!!!

Sofia

P.S.  Other than that, please brush your teeth, wash hands/under fingernails, and any other  common courtesy...Any fairly well-known provider will oblige you with the necessities to acommodate you...