Jellyrolls is an absolute must for each of our trips. When I was on the Disney College Program, we went there at least once a week for the six months I was down there. Drinks are not cheap and it does get smoky, but this place is great.
Two notes that were not covered in detail:
1. The dress code is casual. Some people will wear jeans and a t-shirt, others will be dressed in "bar clothes." There is a variety of people (young/old, locals/vacationers, drunks/casual-drinkers, etc.). I think it is great because everyone fits in.
2. One of my favorite things about Jellyrolls (compared to my local dueling piano bar) is that because they are on Disney property, they tend to watch their language and comments a little more. My local piano bar can get really raunchy, but these guys know how to be entertaining without taking it too far.
I would highly recommend it if you get a chance. They always play a mix of new songs and old favorites, great for most crowds. Bring a few song ideas and leave them on a napkin for them with a tip and they will try to play it. Some favorites include Piano Man (obvious, I know), Brown Eyed Girl, Sweet Home Alabama, Jack and Diane, etc. If you like country, Tommy Bell does a great "Modern Day Bonnie and Clyde" by Travis Tritt. All of the guys are great - you can't go wrong no matter which night you go. If you don't want a crazy, college crowd, you might want to ask what nights the CM's get in free and then avoid them.
Have a blast!!!! Wish I was going!