I was told military get in for free here. Is this true?

Yes, free for active duty and veterans plus 3 extra tickets but very limited time. It may already be past. Check out their website but you have to look for veterans benefits which they do not make easy! I just went last week but tickets had ti be used by the 15th. Not sure you can still get them. There di have reduced prices for military all the time.

Yes limited time. Had to register before July 4th

Recently they had an offer that was before July 4th you can get in for free with 3 others. Not sure if they kept that for active duty members.

I doubt it. Try contacting Busch Gardens.