Air National Guard and marriage?

none whatsoever. ( and FTR, there is no advantage to being married when going AD either..you are each treated as single until there are kids involved..so no BAH)

BMT is done in Texas for AF and ANG. Going depends more on openings in Tech for your AFSC not marital status. Tech School location also depends on what your AFSC is not whether you are married or not.

The only benefits being married have when AD is you qualify for housing or BAH w/dependents. It has no bearing on anything else.

If it is a dual married couple then it is BAH w/o dependents if you meet all the qualifications for it.

When not AD all you get is Drill Pay nothing more

nope

you go to the tech school based on what your AFSC is

No, because either way, each of you is getting BAH at the without dependents rate.

There is only one location for each tech school course. You'll both go to whatever tech school your AFSC requires either way. You'll get whatever AFSCs the ANG unit you are trying to join has available, which might not be much.

You could try to have your unit work BMT and tech school dates, but they are getting their school slots direct from AETC and don't have much wiggle room.

Also, the only real benefits that dual military get are getting out of the dorms (for junior enlisted) and participating in the join spouse assignment system.

No

The National Guard doesn't pay housing allowances, it is a part time job for christ's sake.