My idea is to propose on the same day that we had our first kiss (except 6 years later), in the backyard of my old house. They, too, have a hot tub, and I would have swimsuits waiting, as well as monogrammed robes (with her last initial being my last name, not hers). I'd propose, then we'd hop in the hot tub for a romantic night (the view is beautiful, overlooking hilly cliffs, buildings, and a golf course).
This would require talking to the current residents (whom I don't know), but I figure anyone with half a heart would let me do this.
Lastly, I still am good friends with my old next-door neighbor. So after the proposal and dip in the hot tub like old times, I'd have my family and her family waiting to celebrate with us at the neighbors house as a surprise to finish the night.
I'm open to any ideas or criticisms at all! From talking to her, I know that she wants a SIMPLE, THOUGHTFUL, DETAIL-ORIENTED, PRIVATE, and MEANINGFUL proposal... I only get one shot and want it to be as perfect as possible!
Thanks in advance for the help!