If you try to use their reservation system, you end up being dumped back to the beginning of the process each time you hit submit. It works in Firefox.
This bug needs reduction, but it sure is one :)
It's not clear which submit button is in question but without going so far as entering my credit card info, WORKSFORME in Safari 2.0.4 (419.3) and WebKit nightly (-r20174).
Appears that either the site has changed, or the bug has been fixed, so I guess this should be closed, as I didn't save a webarchive that captured the behavior.
Closing per the above comments - thank you for following up!