In the three and a half months I have had an iPad, it has been to FL twice, NYC twice, St. Louis once, and Paris, France. I have had no problems connecting to WiFi routers in hotels and private residences. At one hotel it was necessary to accept conditions for WiFi access through Safari. At that hotel for some reason I had to do that each day. Others one time was enough.
After having selected the network name the first time connecting, the iPad found the network and reconnected without prompting after being away from the network and then brought back into range of the network...just like it is supposed to do.
There are those on here who report problems...I have had nothing but good experiences with the iPad.