Do they shut rides down if its raining?

Yes

Yes, they shut down the bigger rides but the smaller and indoor attractions stay open, also it depends on the rain. If its just a sprinkle it should be fine even for the larger ones but once it starts pouring, they will slowly close the rides until it's over.

No

yes they shut down the major rides, once the rain stopped they reopened

Sometimes, it depends on how hard. Definitely, if it thunder and lightning.