Welcome to the forum!
Yes, a car can get you to that portion of the coast. You cannot get to the Natural Pool via car, you must have a 4 x 4.2. We are thinking of renting a car, but can a car be driven on the roads to get to the natural bridge and all the nice spots on the East Coast?
3. What is the best restaurant to go to for a Romantic Sunset Dinner?
Sunset beach dinner?
Ideas for a sunset dinner
4. Is De Palm Island worth going to?
Reneissance Island v De Palm Island see Andrea's post, pretty much sums up my feelings as well.