As long as your jeans have an expandable, elastic waist you'll be fine! Its a whole lotta food! I remember one trip DH had to go up to the room to change into different, looser jeans after about 15 trips to the buffet!
Yes and Yes.
I love to wear what I call my "J.Lo Suit". It is a dark grey velor zip up jacket with matching drawstring pants. I usually wear it with a DL tee of some sort. Of course I look absolutely nothing like J.Lo (I wish!) but the outfit reminds me of her