Not quite midnight sun, but one of the most magical experiences of my life was staying up all night on the side of a proglacial river and watching the sun go down... just to have it come up again an hour or so later a couple mountains to the right. It never even fully went down, which is why I never fully went to sleep.
I live in such an area. The sun technically goes down for a few hours every night in the summer - but it stays just below the horizon. I can read outside at night, and it is more akin to night being a few hours of early sunset that bleeds into late sunrise.
It was honestly more magical 9 or 10 years ago when I first got here, but I still enjoy it.