I kinda have the same problem. My iPad 2 will lose wifi connection for no reason. Then I will have to go to settings then turn the wifi off then back on for it to work it's weird.
I think it is great that they would give refunds for that, I never knew they could do that. I wish that they did however have lite versions of every app because there are some good ones that I would like to buy but would regret it if I hated it.
Yeah you definitely need to use the iPad plug. I use it but I tried different USB ports to see what would work and I haven't found a single one that could charge it.
I am sure he can pay for 3G without wireless. As for carrying it to the tables he might just want to leave it in his room or something because casinos do not really allow you to carry bags on the floor, I guess it depends on where he is going and there rules.