The only reason to bring firearms is to shoot the competition matches and to show them off at the campsite over good food and with good friends.
You can get some time on the rental lower range as they open it up for shooting. You stand in line and wait your turn. Unless you are buddies with someone on the main firing line you will not get even close to the main guns. They do not rent these at all. Separate rental range.
They shoot assault rifle match, pistol match, shotgun match, military bolt action match, a jungle walk where they will rent you a gun,
I shoot the matches and bring guns to shoot them all. Quite a load.
Expect lots of walking. Parking can be up to 2-3 ,miles from the entrance on Saturday.
Friday is the day to shop. Crowds are small cause the locals all are at work plenty of room to talk to vendors about thier products and buy thier stuff.
Saturday is spectator day. Expect standing room only crowds and prices raised on this day because more shoppers means higher prices. Plan on staying till 10:00 or later cause you wanna see the tracer shoot after dark.
Sunday is the day to buy what's left of the ammo and surplus stuff. The vendors do not want to load that heavy/bulky stuff up and take it home. 2-yrs ago Oct. APIT 50cal Talon Re-manuf was down to .75/rnd on Sunday. 50Cal ammo cans as new condition were down to .50 each.
If it rains expect severe mudd. They don't call it know creek for nothing. I have seen the lower shogun range under 10' of water before in the spring.
Bring lots of money, more than you can imagine you would ever spend.