If that is what will make you both happy. Sure.

Valentine's Day should be something about you and your partner, not about anybody else's expectations. My partner and I decided years ago to just not celebrate it. We usually take some other day in February and make a fun night together out of it, but really there is no reason why Valentine's Day itself should be something special (unless that's important to the both of you).

So if you want to skip ahead to the sex or skip the whole thing in general, go right ahead.

But at least where I'm located an alley in the middle of February sounds like a very cold and gross proposition!

We make a point of skipping the romance on V-day and going straight for the really creative sex. As long as that's what your partner is into too, I don't see a problem.

If that is what you both want there is nothing wrong with that

I don't see anything wrong with it.

It's okay to have sex how you want (with some reasonable exclusions) for whatever occasion you want. Personally, I avoid going out to dinner on Valentine's Day because of the crowds.