We're going to Disney in August and I won a plum patent tote on ebay that I plan to use. I could never do with just a swingpack, i need enough room to carry everyone's stuff (whether I want to or not!!). I think the patent will make it an easy care/easy wear bag.
Went to DIS in December.
I got a Hamptons black/black sig swingpack for the trip.
We also had a backpack for bigger stuff (h20 bottles, etc).
The backpack didn't go with us onto rides/attractions, but stayed in the stroller. $$, swipe card for DIS, etc was in my swingpack on my person at all times. I wouldn't want to have a bigger bag in the rides/seats with me.
Swingpack + tote bag/backpack are the way to go.
Put valueables in swingpack.
I took a swingpack to Disney in December. It obviously didn't hold as much as one of my larger bags, but it worked for me. I would definitely recommend anything that can be worn cross-body though. My sister took her fall patchwork duffle. Hope you have fun!