okay ladies

I previously posted about having a sort of engagement party before we leave, but I have convinced my fiance to do an at home reception when we get back. he thinks the idea is completely weirdddd, but i explained its a destination wedding thing lol. he is still not really big on the idea, but is going along with it because i told him it will be fabulous... now i need your help on how to make it FABULOUS haha! Any tips, ideas, things that worked (or didnt work) at y'alls? Here is all I have in mind so far. We are going to buy the wedding dvd, so we will be showing that. My dad will be BBQing, and his fam probably chipping in the sides. My sister will be baking us a Married in Vegas wedding cake. Everything else is ??? how do invitations work, etc etc etc Please help

) Thank you!!!!