Thank you very much for the info.
Do you believe I will have to just wait out a full 24-hours? / Do you have a best guest on how this plays out?
If the transaction shows as "completed" or "sent" on your Coinbase account, I'd wait another hour then send a support ticket.
The main reason being that you're telling me that it usually never takes you over 30 minutes for the transaction to reach your wallet. So it's obvious something's wrong.
On another hand, they must have high outgoing transaction volume in anticipation for August 1st, which is probably what is slowing down the withdrawal.