There are a great variety of trips at most of the bases (400--MIA,HSV,IAH,JFK,ANC and 200--JFK,and ANC). The trick (as you well know) is having the seniority to hold the trips that you want. Or a reserve block that you want.
As for the mix of bachelors vs family types?...we are big enough that we have all kinds of backgrounds, from guys with families with young children and those with older kids away from home. We also have a few bachelors, and some that act like bachelors when they are on a trip!!
I only have a civilian background but one the of the others can answer you about the Reserve/Guard duty and how the company handles that...
Good luck.