There are a couple articles in the forum library concerning internet access "on the road". I suggest you start there.
You can set up the Xbox for wifi connection and install wifi in the coach that via any of several methods. Some of the Xbox games may have high bandwidth requirements, though, and you may not always have as fast an internet connection as you like. You need to think some about where you will go and how to get internet in those pales. Regardless of the method used, i.e. cellular, satellite, or campground wifi service, it may not always be available or may not per from well enough to meet your needs. Fact of life for mobile users.