Love the idea of putting outfits in plastic bags! Since when we usually go you have no idea if it will be too warm for long sleeves or too cold for short sleeves. I pack shorts and pants for each day with matching shirts. Then I get confused with what I have done after we are there. We end up with odd unmatching outfits in the end. Gotta pack double for baby and carry an extra outfit with you for the day, just in case.
I have a roll up bag with 4 detachable pockets that I got from Mary Kay. That is where I try to put all of my toiletries and make up. It has a hanger so I just hang it in the closet and take off each pouch as I need it. Then put it back and it keeps my junk off the bathroom counter.
I also start buying premade formula months in advance so that I don't have a huge formula bill in the end. This year I will also be buying disposable nipples/collars from diapers.com. I am hoping that we have this reflux under control by then. If not, it will mean that I have to pack cereal to try to cram into these premade disposable Similac bottles. The baby food, well, that just has to be packed as it is.
If I had to fly to Orlando, I would wait until I got there and try to go to Walmart to pick up the premade bottles and baby food. They take up a lot of room. But as you use them, in the trash they go. Thankfully, we are only about 8 hours away, we drive.
I take things that I don't need to bring home. I will spend hours trying to come up with things that I can take that will be left behind.
A $5 bath tub sponge thing from Target for bathing the baby. It lays on the bottom of the tub and you lay baby right on it. I generally buy new shampoo and conditioner for me at home and pack my 1/2 used shampoo and conditioner and leave it there when we leave. I try to do this with as much as possible.
With DD#1 I brought my own collars and nipples for her premade bottles. So I brought a $1 dish pan that I could use to wash them in. But I left it there when we left. I also brought a ton of take and toss spoons that I could just leave behind at the restaurants after I fed her baby food. That way I was not having to keep track of dirty spoons vs. clean spoons.
As DD#1 gets older (will be 3 on our next trip), I take take and toss princess cups that we use for her water. If need be, they get left behind also.
The diaper bag was always MUCH lighter at the end of the day. We are not the kind of folks that go back to the room in the middle of the day so I have it PACKED!. We do go back on occasion, but really we try to get our money's worth at the parks. Even with little ones.