My friend from West Yellowstone told me (she works for Xanterra):
There is a cell phone tower at Old Faithful, another at Grant, one up on Bunsen Peak, and one on Mt. Washburn. Lake Village doesn't currently have cell phone reception. Xanterra has wireless in the dorms, and a comptuer or two for employee use.
Here's what my employer (DNC) said :)
The main dormitory at each location has been wired for WIFI reception. Our computer department will need to get some system information fromyour machine, then they should be able to give you access if you have awireless card in your computer. You are also able to use the computerin the dorm's common area (employees share it by signing up for blocksof time) if you would rather not bring your laptop.
Hope it's helpful!
Let's try to solve our questions together!