Visited here on a date with the $10 Groupon good for two people, 3 rounds. Although the two courses (18 holes each) and decor are pretty basic, it was still an amazing deal and a lot of fun. The desk staff were friendly and we got the club and a glow in the dark ball. The darkness (blacked out windows, glow balls, glow in the dark paintings, glowing edges on the holes) takes a bit to get adjusted to. I was dizzy for a sec while we were playing but once adjusted it was fun.
We went on a Thursday evening and it wasn't too crowded. There was, however, a group of 7 ahead of us and we caught up to them quickly. We wish the staff had them break into two groups to make it go faster. Don't have super high expectations about the quality of the course. It is constructed with cheap planks of wood, plywood covered in felt and electrical tape holding together the seams.
Overall, the affordability and AC when it is 5 million degrees outside make it a fun change of pace. There aren't many mini golf courses in the valley so we will likely be back when we have time to kill. Don't forget to wear light colors that will glow and avoid black or it will look like dandruff central. :-)