We did the same think last month. We went to Cocoa Beach, it was a little over a hour away. Daytona would be at least 1.5 hour drive. Bring losts of quarters since you will be driving the toll road (exact change has it's own lane).
RonJon's is a distination by itself. They sell everything under the sun for fun at the beach. (suits and towels etc...)
We parked right behind RonJon's. It cost $3 to park the car. There are other places to get on the beach which are free, however this is a good place and it gives you a feeling of more privicy since everyone paid to enter. There is showers and changing area right by parking enterance.
Bring a change of cloths and something to dig in the sand with, as well as something to put shells in to bring home.
Several fast food restaurants are close by.
Have Fun