Well, I didn't take the ATA. Too much other stuff.
I did use Skype via the hotel's wired Internet - worked great. $0.02/min, from my laptop. Just made a couple of calls home; so no big deal.
Tried skype on my HTC Android phone connecting via WiFi in the hotel. Not good enough WiFi to be viable.

My original issue was Verizon wanted $3/min for service from their roaming partner.

Next trip, I'll take the ATA.