Dress the kids alike! I bought transfer paper from AmyMickey and we made fun shirts for the kids (shirt was the same color but each kid picked their design). Another fun idea was to do the Mickey tye dye shirt - during our trip this summer I got seperated from the rest of my party and a cast member asked "are you with the other shirts...they went that way".)
My kids earned their spending money...we had a chore chart and they earned Disney Dollars (found on the Creative Disigns board). Every time they earned a set number of Disney Dollars they traded them in for Disney gift cards. It really helped with shopping because they were more selective when it was their money being spent.
Mickey left a present for each kid in our room on the day we arrived. I filled the gift bags prior to leaving with fun stuff as well as necessities (from our trips I have done: pj's, sweatshirts, new outfits, plush animals, pez dispensers, books, costumes, inexpensive toys, gift cards, etc).
Have breakfast in the room and snacks / drinks in the stroller. Also take ponchos with you. We had dollar ones from
Walmart and definately got our money's worth the week we were there.
Because I knew we were planning to eat at Rainforest Cafe, I took the $0.99 kids meal vouchers with me (I found these via google). We had our car, so we ate off site often (Pizza Hut, Subway, McDonalds).
Lastly, I traded in my bank reward points for gas gift cards, purchased Disney gift cards on week's when I had extra grocery money remaining and asked for gift cards for birthday / Christmas gifts (for myself not the kids). I figure every little bit helps!
Enjoy every minute of the time you are spending with your kids!