This is an excellent list of what one family's priorities are when making decisions about their Disney trip. You may want to consider other options, but this is a good place to begin. For us -- temperature is SO important as we've been there when it's hot and it's really no fun and we couldn't do as much as we'd like. (We just HAD to return to our hotel in the worst heat of the day). And another priority for us is always staying on property (for convenience and perks).