Hi, Amanda! Just the thought of buying new scrapbook supplies makes me happy! I've never met stickers and paper I didn't NEED! WDW scrapbook supplies can be found in gift shops in the parks, the World of Disney Store in Downtown Disney, and even in resort gift shops.
While I don't feel there is a huge variety of products, there are some items exclusive to the "World" you might want to pick up. I think the best selection is in Downtown Disney. You will find albums, stickers, paper, and Mickey punches. I am sure the stock is constantly changing, so more products may have been added since my last shopping spree in Downtown Disney. Prices for products will be the same at any Disney location.
I am an old fashioned cut and paste kind of scrapbooker, but if you want to make a digital album, check out
www.disneyphotopass.com. Here, you can download photos off your photo pass as well as download your own photos to create a one of a kind Disney Photo Book. It looks like a lot of fun with a beautiful finished product. Check it out!
Thanks for your question and Happy Scrapping!