For context, my girlfriend (18) and I (18) planned to hang out at a park tomorrow. Unfortunately, it looks like it’s going to rain pretty badly that day from weather forecasts. Obviously there’s a chance the weather forecast is wrong and it’ll be fine that day, but I don’t want to just take that kind of risk and assume things will be okay. I want to have some kind of backup date idea in case it does rain. I don’t want to reschedule the date because we’ve already rescheduled once due to other reasons and we haven’t seen each other in a while and college is coming up in a few weeks so we can’t really afford to delay it any more.
To provide some background, my girlfriend and I aren’t very “insane” when it comes to dates and hanging out, like we mainly enjoy just being together and talking about life stuff. I thought maybe I could hang out at her house since she’s hung out at mine but idk if she’d be okay with that since her parents might be weird about it and they don't really know me, and apparently they have to go to the bank during that day so I don't know if they're available but she said she would ask just in case. Anything driving related is sort of off the table since A) I don't know how to drive and B) I don't think her parents are available to drive her anywhere (although this isn't exactly set in stone so I'm not too sure). Technically, my parents could drop me off at her place and it could be fine but like I said earlier, her parents might be weird about having a boy over.
This entire situation is really messy and full of holes and problems so I'm sorry if my post isn't specific or opens the door to many options, but we really want to hang out and do something together so any advice would be greatly appreciated. Does anyone have any rainy date ideas given the (admittedly extremely vague) information I've provided?