We just got confirmation that the event is endorsed by the Marine Corps League, and Vietnam Veterans of America.
As far as uniform goes , you will need 2 sets of uniforms , you will get wet and dirty , uniforms can be O.D , Tiger stripe ( doe not need to be Vietnam era correct) ERDLs , Duck Hunters.
Boots as long as they are not Tan you are good .
Gear can be M56 , 782 , LC-1 or 2 .
Weapons can be AK , M14 , M60 and any M16/ M4 variant as long as you take all the modern add ons off.