First of all, their behind the scenes system is very reliable, which to me is most important.

That said, it is obnoxious that when I drop my car off at National, my receipt is available on the website by the time I walk in to the airport, yet Marriott properties take 2-3 days to e-mail me my folio, if they ever do at all.

This is the major gap that I wish Marriott would fix with their systems.