I like to watch the stars ...

I prefer Stellarium [stellarium.org].

I live in a large urban area, well lit. It's a rare night when you can see more than a few stars.

I had Lasik almost a decade ago. Best money I ever spent. Post surgery back then was a miserable day because your eyeballs felt badly scratched (not surprising considering they'd cut the cornea open to zap it,). Not sure about how it works with the newer bladeless techniques.

The surgery itself is extremely safe. The effects are great, I went from 20/275 in my good eye to 20/15 and am still slightly better than 20/20 in both eyes. What you will notice is a definite impact on night vision. They only correct a narrow circle on your cornea, for most vision, that's no problem, but at night when your iris opens to take in more light, it will open wider than the corrected area thus causing haloing around any and all lights. You get used to it but it's always there. Also in line with the poll that prompted your question, star gazing post Lasik sucks. I live in the west and when camping always enjoyed star gazing, but now I can only make out the brightest stars and can no longer see many of the constellations. This is due to the same cause as the halo effect, my eyes can't get enough focused light through the fixed area and the unfixed blurry area just blurs what light is coming in.

I'd recommend just getting them both done at once, so as to get it over with. One eye or two you're going to have to take at least one full day off with each surgery.