I'd consider a CC with an inactice owner "dead". They may still play tournaments if there are active members with permission and they may play MP rounds as friends, but crucial functions, limited to the owner, will be neglected.
I'd consider contact and invitations to an active CC o.k.
Concerning Q #2, the owner may opt to accept members without approval - it's an option in the Owner's Tools.
In general, I'd advise prospective members against direct CC application. It's better to get in contact with the owner, or at least with a director, first to check on life and vibe of this CC. Asking for possible special rules may give a valuable clue as well.
And, remember, you may enter for free and leave on your own will - just be courteous!