I’m a bitcoiner also getting married this year. I’m having the same thoughts.
My #1 takeaway is that you want your future wife to enjoy the day. However much BTC you need to spend to achieve that, do it. If it’s not much, great. If it’s a lot, it’s one day, do it anyway.
More broadly, I am starting to realize that if we’re right about bitcoin, it won’t actually matter how much we have. We can’t even fathom how much it will be worth. So for a special day like a wedding, don’t be afraid to spend.