Yep. I do it 3/4 times per year since 1998 just as you describe. Time between visit & return not critical, I have been off island over 6 weeks on this pass. If you have a doctor off Island you need to see, you just ask him/her or your local MD for a pink sheet "Travel Assistance" voucher. Follow directions to get authorized & get tickets at nearest ferry terminal. Be sure to check "escort required" if having a rider along.