Flightless Honeymoon – East Coast USA

Hi everyone! My fiancé and I are planning our honeymoon for the first week of September of 2025. We both hate flying and were hoping to do something all inclusive somewhere close to home on the beaches. We live in Southern New England, USA, and have been looking near Montauk, NY but would love suggestions. We are less interested in going north towards Maine/VT/NH because it may be colder around that time of year near the beaches, but if there are some really great spots that way I would love to hear any experiences you may have had up there! Thank you in advance!!