Just getting involved in all this DSLR stuff and I've been noticing alot of these photos look almost unrealistic with colors and stuff. Should I be taking the photos in jpeg or are you guys making changes to brightness and stuff after the fact? Leaving in 10 days and want to know how I should set the camera. I do have the program photomatix pro.
I think the most important consideration to answering your question is: do you currently shoot in RAW? or, are you comfortable processing RAW files?
If processing RAW files (ie. uploading, editing, and then converting to JPEG) is part of your current workflow, then I would continue shooting in RAW at Disney World.
I've also read stories of other photographers who used to shoot JPEG, JPEG, JPEG, who after a few years learned about RAW and how to work with RAW files, and then wished they had shot those early photos in RAW years ago. Actually, that story seems to hit pretty close to home for me.
I, personally, do shoot RAW at Disney World. However, I will switch to JPEG for certain situations where I know I'll be shooting TONS of photos that aren't necessarily "RAW-worthy" to me, but are "good enough" as JPEGs. For me, those situations are: parades, Fantasmic, shows, Indiana Jones, "Lights, Motors, Action Stunt Show", Kilimanjaro Safaris, etc. These are situations where I know I'll be firing off hundreds of photos, and I'm happy with them being JPEGs. It also saves me space on my memory cards...imagine hundreds of RAW files of just the High School Musical Pep Rally?
And just because I shot those events in JPEG, doesn't mean that I can't do post-processing on them. For me, the post-processing on JPEG photos still turn out quite well.
btw, as you probably already know, Photomatix Pro is a program for creating HDR (high dynamic range) images. This is where you'd take 3 or more photos of the same scene (ex. 1 underexposed, 1 properly exposed, 1 overexposed, etc), and Photomatix Pro combines them into a single HDR photo.
In terms of your question about RAW vs. JPEG, I'm not sure that Photomatix Pro is necessarily relevant in your decision for one vs the other. Photomatix Pro should be able to handle both (although you're supposed to convert your RAW files to TIFF before using Photomatix).