It is important to know if you are picking up from Ft Hood proper, or North Ft Hood, as they are separate facilities on opposite sides of the huge base.
Pickups from North Ft are only done on Fridays.
If you are going to North Ft, there is no point in going through the lengthy visitor pass routine (expect it to take an hour or more if they are busy, which they usually are) and then trying to find your way across 25+ miles of base roads. You do NOT want to get lost and wander into an area you are not supposed to be in, your day will get really long if you do!
Come in the gate off Highway 36 on the Gatesville side, go about a half mile from the highway and look for a large dirt parking lot on your left (East side of the road) with a big dead tree in the middle of it, that is where folks doing pickups meet.
From there you will be escorted as a group to the vehicle storage area. Coming in this way you do not need to go through the security pass routine. You are still subject to search, etc., so the usual rules apply.
You meet at 0830 to be escorted in. Do not be late, they will not come back for you! Other than that, you will find the folks there very friendly and helpful. They say they don't help, but they will. When I picked up the M931s last month the Army guys provided slave starts with a Humvee, and helped Powerstroke get his locked brakes uncaged and free (as in got under his truck with tools and got after it). Again, so long as you are friendly and don't act like you expect them to do stuff, they will offer to help.
One good thing is they don't let folks doing pickups wander about much, and they watch 'em closely, so pilferage from other vehicles is limited.
Cheers