Nice pano...good location choice too - I need to do a few more panos like that - right down on the ground with the people walking around!
I've played around with some panos at Disney as well...but most of mine have been wider, landscape-type panos. I've been using Autostitch, a freeware program that I love (I have Canon's too...and it's pretty good - but I have to throw in a good word on autostitch because it does an amazing job, rarely shows seams, can adjust different exposures to match, and requires no more input than opening all the photos you want merged (not even in any order!) and letting it go to work. It's a truly amazing program for freeware!
Here are a few samples of panos I've stitched with the program:
Boardwalk Resort from Beach Club shore - 6 or 7 shot pano - each exposure 5 seconds - tripod mounted:
Wilderness Lodge interior from 4th floor - 3 exposures, handheld:
EPCOT World Showcase lagoon from left ferry dock - 8 exposures, tripod mounted, 8 seconds per exposure:
Magic Kingdom from 2nd floor train station deck - 4 or 5 vertical exposures (like Tim recommended, it gives a much bigger area for cropping) - tripod mounted, using ND400 filter for 3-5 second daylight exposures: