I think i will like it. I previewed it on "My Marriott Voice" a couple of months ago, and at the time thought it was nice to look at, but I preferred the old one (slightly), simply because i am (was) extremely familiar with the old one, warts and all.
Clearly, one will have to learn to navigate the new site, which is somewhat annoying, but I suspect the functionality will be improved over the old site. It is prettier, but I have to admit I haven't played with it enough to see a functional improvement.
I have found a few minor bugs and have reported them to Marriott.
So what do others think?