We've spent a few Christmases at the beach when we lived in Saipan. We made the huge mistake the first year of buying a real tree the day after Thanksgiving. No amount of water could keep it alive and I have photos taken on the day we put it up and on Christmas Day - you can see that all of the ornaments are several inches lower on Christmas Day because of how much the (dead) branches drooped. It's one of those memories that make you chuckle when you think of it.
Lol! those make the best memories :)