We are planning a trip in aug. Is it safe to rent a car from there once we get there or should we somehow book it before hand

It's always better to book inavance when doing long trips. When traveling it's better to plane a head. Make your regitervashions tell them this what I want waiting for me. Because if the other end messes up. You get a upgrade

Always reserve a car.

I always reserve my rental in advance. Daytona is a smaller airport with easy in and out, but limited auxiliary services. When they're out, they're out.