guests won't spawn

[PlasmaGD]

I just realized guest don't spawn at all even with the 'large tram' cheat, they're supposed to come from the bridge shown on the image but they don't, any ideas of what can I do? I already put so much effort on this park

[Gymnasiast]

Turn on sandbox mode. Then open the Map window and set the spawn point on the last piece of the bridge (with the arrow pointing towards the entrance).