DO: Be prepared to go down on your partner if you're asking him/her to go down on you.
DO: Listen to your partner... s/he will let you know what feels good and what doesn't. Return the favor. You'll both have a lot more fun that way
DON'T: Just roll over and go to sleep once you're satisfied.
DON'T: Insist on a position that's uncomfortable for your partner.
DON'T: Insist on anything kinky unless you know your partner is ok with it.
DON'T: Put your sex toys in your carry-on bag! (Not too long ago, I saw this poor guy at the airport having his carry-on bag hand searched by security... now I know why they wear gloves
)