Hi.
The new luna parks in Livonia have 2 carts but one of them is usually bugged. You can hardly get in the opened door and when you do get in, it is impossible to get out without admin TP.
I made a video on a server they didn't touch the vanilla luna parks. It is a modded server, but none of the mods could cause me to get stuck.
Vid: https://youtu.be/680smbflMrs (showing Lukow luna park)