You will have a good time.
We drive on the beach almost every weekend, we have a season pass to Freeman Park beach access in Carolina Beach, NC. We take my truck since it is built for off road but here are not pointers for the Jeep.
-Defiantly air down if you are running stock tires.
-Tow hooks are a good idea since there is no place under these Jeep to attach a tow strap cleanly to minimize damage if you need to get pulled out.
- Always carry a shovel. Generally you can always dig yourself out.
- Get a good feel for your jeep in sand. Low and slow is a safe bet but momentum is your best friend. Depending on the conditions of the grooves too much speed will get you bouncing too much and berry you front tires. We have had a very hot dry summer down here and the sugar sand is very soft.
- DONT SPIN YOUR TIRES of you loose traction. Stop and crawl out of the hole.
- Use your head and be smart about you moves.
Definitely wash your Jeep after you get off the sand. Even though you don't drive it in the ocean the amount of salt attached to the sand will cause oxidation and rust if not maintained. I usually hose it down real good but then I will also hook the hose up a oscillating sprinkler and let it sit under the truck for 20min or so.
Have fun, it is a great time. If you come down to Carolina Beach look for my truck, we are always out there.