Are kids aloud to come to the range

Of course just as long as they're under adult supervision.

Yes with adults make sure you have proper ear wear for them

I rented a private bay last week with my wife and kids. My kids are 1 and 2. The guy at the counter just asked if they had their "eyes and ears", which they did. Idk what they would've said, if I replied with a "no".

Yes. Must be under adult supervision.

Yes, but there is a minimum age limit I believe.