While not specific to Marriott, I find the whole T-Mo setup to be ludicrous.

The nice thing about my SBC DSL account is that I can add WiFi access for $1.99/mo, so now I can go log on a the Coffee Bean, Barnes & Noble, McD's, and UPS Store.... between those 4 majors, I have plenty of coverage, and keeps me out of Starbucks and Borders.

But still... WiFi can't be THAT expensive, and I think it should ALL be free. Togos, Diedrich's Coffee, other private coffeehouses, many airports (SNA, LAS, even LAX T4 ticketing area), etc. Heck, the City of Hermosa Beach, CA had plans to make the entire city WiFied!