I don't see a problem having your family in Denver during indoc (your first 2 weeks as a newhire), but don't have them out there during your aircraft training - too much of a distraction.

I don't think you'll have immediate pass privileges for the family so plan on buying them tickets. If you have pass privileges, just plan on buying them tickets. Nonrevving sucks.

Indoc used to be put up at the Doubletree across the street from the training center; I don't know if that's changed or not.
Aircraft training is usually put up at the Sheraton downtown.

As previously mentioned, you'll have a couple of days off every week during training that will allow you to go home.