Tivoli Gardens far surpassed expectations - really fun, festive atmosphere but a way more quaint feel and not as commercial, crowded, or expensive as American counterparts (e.g., Disney, Six Flags, etc.) Good mix of rides for all ages (particularly if your child is ~4 ft., than they can ride things solo, but my four year old is not and still had a ton to ride solo or with an adult companion). Entrance relatively cheap (~$20), if you are going to ride more than 2 rides / repeat times on rides you should buy the ride pass. (also reasonable at ~$40, each individual ride is anywhere from $4.5 - $13.5 depending on the attraction, with very small waiting queues my 4 year old probably did 25 rides including repeats on attractions, and it comes with the photo pass)

We had a great time at Tivoli Gardens on the rides. This is not an overly large park like a Disneyland, but there were plenty of rides to keep my 3 teen and almost teenagers busy for most of a day. We were lucky when we were there and had very short waiting times on all the rides. It is small enough, though, that it is not overwhelming. We had a great time. We did notice the next day that the lines to get in were very long so some days there might be more people waiting in line than what we experienced.

I bought wristbands for two children, both over 140cm tall. We visited late afternoon on Easter Saturday so unsurprisingly it was rather busy. Nevertheless, they only had to wait for one or two rides before being let on, which is a reasonable waiting threshold. There was a good range of rides but they didn't want to go on what looked to be the scariest. We covered the cost of the wristbands within 40 minutes and stayed several hours.