I'm a little confused. I was under the impression that it was free to go to Padre Island Natl Seashore...apparently I'm wrong...so is it $20 per vehicle for year (Annual Park Pass) AND $5 pp to get in or just one or the other or what? Also would a person WANT to go there AND Mustang Island State Park (pay to get in both places), or would that be somewhat redundant? (Does MISP offer the same as PINS???) Thanks - I really appreciate everybody's input....just wanting to have a rough itinerary of what we are going to do when we get there, so that we don't just sit around saying 'now what???'