Sponsor plus dependants as many as that is.
If your civil service retired you can't take anyone in but if your military I have never seen them in force a limit.
You need to have at least one sponsor with a valid military ID, everyone else 10 and over needs a photo ID. So kids would need a school ID if they aren't a military dependent. For the amount of people, there is technically a limit to around 5 per ID, but it's not enforced, if you bring more, it's fine.
There is no limit so far as I know. You must have base access and everyone over 10 must show ID.
Rules changed over the years, it used to be you tell them a number, show an ID, and you're good. Then it changed to one other person per ID, but not sure what it is now. Best bet is to ask the person in the booth before the movie. As long as you're cool, they won't give you a hard time
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