My guess would be for sunshine and overcast days. The musical instruments would get wet during a concert. There isn't a canopy over the stage.
I would do it for shine or overcast, not good in rain, plays would be cancaled
No it is an outdoor park with water & bridge views and a garden. You can look up online what their event schedule is.
No . Outdoor seating.
If it begins to rain during the show they will stop it. We have had this happen
I was only there briefly at the park, but the venue there did not appear to be a "covered" situation.
Get quick answers from Prescott Park staff and past visitors.