I traveled to Philly for a conference. I traveled with my work laptop and an iPad, and a Verizon 4G personal Wifi hotspot. Well...in the hotel room it stopped broadcasting a Wifi signal (I had a strong 4G signal). I went next door to the Verizon store to see if they could fix it. It worked fine over there. I went back to my room. It did not work. I went to the convention center the next day, and it worked fine. Went back to my hotel room, and it did not work.
Verizon had a booth at the conference, and I went to ask the guys there if they had any issues. They said that at least three people had been there asking the same question, all staying at the Marriott.
I think they block the use of personal hotspots as a heavy-handed attempt to force you into using the hotel's expensive internet options in your room. This is ridiculous, and I will not stay there again.
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