I would take him to a jazz bar and share a couple joints then ask him if he would like to come back to mine for another joint, some beer and to 'make music' together!
Toward the end of the romantic Fens moonlight trip would suggest we go to MacD drive thru as I have not been there for a number of years and have 'various' cravings
Interesting question I guess I would hire a boat... head far enough out to sea so we could really be alone take a picnic and swim if it was warm enough..... peace and quiet and real time out to get to know each other...bliss...
If it was not warm enough to swim off boat then we could fish - I would then make meal with fresh fish and we could eat on deck with good wine anchored in moonlight?