Cupids second choice. Possibly even first

I would say that a brilliant first date activity would be something that involved moonlight and water. But the second best date activity is tobogganing. I have known this since I was fifteen or so. For those of you that don't believe me, here's there reasoning:

You not only get to sit close, you HAVE to.
In order to stay on said toboggan, one must wrap one's arms around one's date. Possibly even legs, if the toboggan is long enough and the hill high enough!

Because you need cold and snow to toboggan, your eyes sparkle and your cheeks get all rosy. Even the undead look healthy and happy tobogganing. Actual living people look awesome.
The other great thing about the cold is that it is almost always a given that there must be hot chocolate somewhere afterwards, so said date gets prolonged.

There are some things you shouldn't do, though. For instance don't, on the first run, accidentally break the nose of the person you're there with. Because nothing puts the kibosh or romance like blood and pain. I speak from experience here. As if that's a surprise in any way.