You dont know HOW WRONG YOU ARE. Glad someone already pointed this out to you. Obviously you have never tried to find some info you need from a specific Marriott. You would not even be able to find a general email address for any particular hotel. To that I would say it is stupid. Each individual hotel can take its sweet time to read the emails but at least it can let customers send in enquiries etc. To illustrate, InterContinental Hotels Group has email address of each hotel listed on hotel's own page. I did get an answer regarding extended parking charges from Crown Plaza at ATL.