I just got back from OBX in North Carolina. I was out cruising on my stock 20's and they were fine. I just aired down to 18psi. Even in the soft stuff, I was fine. Regular sand driving tips still apply. Keep the momentum going and air down the tires. If you get stuck, don't spin the tires, etc... yada yada yada. Like Kev said, you can always get anything stuck with enough effort... or stupidity whichever way you look at it.
MINE > '14 JKUR Anvil
HERS > '13 WK2 Overland Summit V8 Mineral Grey