Verify before joining a channel with max users as admin

I have admin privileges on a server, and this situation has happened a couple times. I will join a channel to visit and chat, not realizing that the channel is intended for 2 people only. The issue is, my friends are hosting and streaming special events with strict rules, and having a third person drop into voice chat with them is highly disruptive and potentially rule breaking for their game event.

I suggest that an admin could be shown a verification (yes or no) message box when trying to join a channel with maximum occupants, like so:

"You are about to join a channel with the maximum number of participants."

I know I should remember to carefully check the channel names before joining, but this would be a big help, as I'm quite forgetful. Thank you for considering.