Food and drink are not permitted in the planetarium.
Once a show has started, if you must leave, re-admittance will not be allowed.
Be sure all electronic devices are silenced during the show.
Generally, arriving five minutes early is plenty of time to get comfortable. Keep in mind, though, that admittance is on a first-come, first-served basis. The show begins promptly at the scheduled start time and the doors close five to ten minutes later.
We do not have any firm guidelines on children. If a child can remain reasonably quiet for the hour, then it is fine for that child to attend. We have had very young children enjoy the show before, but keep in mind that the subject matter is at the college level.