How much camera stuff are we talking...and do you plan on putting your camera in the bag, or will that be around your neck the whole time?
When I first purchased my D60 and was planning our trip to the World, I knew I wouldn't be willing to wear a backpack around the parks (b/c of heat, bulkiness, and I knew it wouldn't match my shoes

). I also knew I wanted something that looked reasonably presentable for when we went into a restaurant, etc. so I made the decision to get a messenger bag (that is not actually a camera bag at all). I purchashed the Longchamp Le Pliage Messenger bag. Here is a picture (although mine is not this color).
http://www.longchamp.com/en/home-co...l&genre=femme&ligne=089&nav5=lignes&snav5=089
While I know this is not very practical for most, I actually loaded it up with everything I think I will be taking to WDW and it fits it all surprisingly well. In the front pockets, I kept my spare memory (2 4gb SD cards), extra battery, an ND filter, an iPOD nano (which I would imagine would be the size of the remote shutter release I'm going to get) and my cell phone.
In the big middle pocket, I put the Gorillapod on the bottom, my nifty fifty on top (although I would hopefully be bringing the Sigma 30 instead), along with a water bottle, my small P&S and some pages from my Passporter. I could
probably fit my camera body and 18-200mm VR in the main compartment of the bag if the water bottle wasn't in...although I would have to take it the lens off the body which isn't that convenient.
In the back pocket (that doesn't have any sort of closure) I put some propel drink packets and my sunglasses, as well as the lens cap and a lens cleaning pen.
This bag is extremely comfortable, reasonably "stylish" and can be used as a purse the rest of the trip if you aren't bringing the DSLR, the main portion is made of Nylon so while it isn't water proof, it is water resistant if it starts to rain (although I wouldn't walk around in the rain with it) and the strap is made of some sort of woven cotton or something. The messenger style is nice because it's easy to access and you don't have to worry about it slipping off of your shoulder like a normal purse.
All of that being said for this bag, I think I will also invest in a nice durable, comfortable and less "stylish" (more unisex so DH can carry it around as well) backpack type of bag for when I am trying to cart around more gear (i.e. our trip to Alaska the following summer).