Count me among those who DON't take everything but the kitchen sink!
I make 'page kits' before hand - choosing photos, paper, embellishments and put in a page protector for each one. note any tool needed like a particular punch or eyelet setter. I take more page kits than I think I'll be able to do and try to take a group that use the same punch or supplies.
My supply / tool list is simple. Scissors, paper trimmer, pencil, ruler, black gold silver gel pens, large square punch (I use that a lot for photos), adhesives. and my papertaker full of page kits.
Easiest for me to work on is a preplanned album such as my cruise album which had a color scheme, the same title font on every page and a limited number of similar embellishments.