To enter you will need, BOTH, current vehicle decal and Military I.D. card. I was there last Sept for Harley Poker-Run. Many retirees had to park vehicles and motorcycles outside the gate at TP because they had no decal. This seems to be happening more these days, as USAF did away with decals. So when I am near a military installation I go to Pass and ID and get a decal. Now, "catch 22". Neighbors at Trumbo Point drove out to Boca Chica pass and ID to obtain a decal. they were told "Unable, you don't live here", but then someone else got their decal. So, go figure. Depends who is working at he desk I guess. just have a current decal before you get there.