Pros
They're a big, international company so opportunities for advancement abound, & the benefits are very good. If you're passive aggressive, you'll fit right in.
Cons
Chaos reigns @ HQ. Due to an overabundance of duplicative responsibilities, decision making suffers, and projects constantly scramble at the last minute to accommodate a shift in the slightest breeze. Business serves IT, rather than a partnership. IT motto is, "If a person can do it, why have a computer". Ancient systems require manual data entry of identical information when automation would reduce risk, time and effort. But IT doesn't want to pay to automate because it costs the hotel owners money to pay someone to do the data entry, rather than Marriott to write a little bit of code. It's a shell game - your fees are lower, but you're paying employees to do stuff a computer can do. Paternalistic culture means you can't say no to Daddy.