I know there are many indoor activities during winter, but 90% of the girls I have dated were unperceptive to ANY kind of PDA in public (and most indoor date ideas are public spaces) even if they turned out to be freaks in the bedroom.

Short of escalating in your house (not always possible in first dates), how do you escalate in winter dates? There will be heavy rain in my town for the next week and i've got two first dates lined up. I do manage to pull to my house in first dates, but I wish to know how to kino in the times it doesn't happen.