One good way is to get a high powered wifi router. Something like a buffalo router and flash the firmware with dd-wrt. This will allow the router to become a wireless client to the cg's wifi. Then you can plug in your laptop's ether into the router and use the router's high powered wifi capabilities. Often the router will have a removable antenna, which will allow you to put a super high powered antenna on it. You can get a 15 dbi antenna put it on a pole or in your coach and get streaming wifi better. Still you will be stuck with "THEIR" speed limits, but the signal will be better.
Also get something with a higher Netflix cache... Up the cache settings high and start the movie early and hit pause. Wait for the cache to build up real big then it should be no problem.