When he doesn't want to think about it or talk about it...it means just that...no, he doesn't want to discuss her with you. She is in his world and you aren't invited in.
Bring your sleepshirts - I would seriously doubt he will want to ML in his parents house...no, no, no, do you make advances, not at all.
You forced yourself on this trip - he's trying to be polite with you...let him run this show.
As far as the gift...yes, I meant a housewarming gift...usually a nice potted plant or potted plant basket, from a florist. Order it for delivery upon your arrival.
Do not ever, ever ask him, again in the future how you should act...Tam, you are not a child. You are a grown woman, act like a grown woman...stop giving him your personal power, okay!!!!
Also, stop thinking that this trip is going to bring him back to you...I know exactly what you're thinking...you are thinking that this reflects you are a couple....this is where you become aggressive, too chatty, overall too enthusiastic...be yourself.
These are his parents - follow his lead. Were they not at your wedding? If so, why would you ask him...nevermind, another time.
Respect the parents house...don't push him for sex...that's plain tacky, no class...
Just go and have fun, he wants to see his parents home - this is not about you or your relationship with him...leave all of that behind.