Surfing right now from the Westin Copley (Boston) using a Fujitsu S Series with built-in WiFi and an SMC7004AWBR accessing their GuestTek service (free here).

I have the router spoofing the PC MAC, though it seemed to work without doing it. Might matter more if it was paid service.

Also interesting is that it seems to work better with the router's DHCP server ON.

Every 1-2 days, I had to disconnect and renew the router's Internet connection.

It's worked well! Much better to surf in bed than at the desk...