Hi Tim,
I can’t help you with an observatory visit I’m afaid but would like to make a comment.
I was considering the purchase of a pulsar dome some time ago but decided the opening aperture was too narrow and didn’t go far enough over the zenith.
Other dome manufacturers provide much wider opening slot apertures and go further over the zenith so are more useful if you’ve got a telescope with a piggyback guide or second scope.
Just thought I’d say!
Peter