I'm VIN-less also (config date April 5; Blue, Aero, no EAP, non-owner). I'm doing okay with comms with my DA (due to prior engagements over 2+ years), but I keep them very limited and always with something functional (as opposed to a "where's my car" question).
I did get a response today indicating that since I still have no VIN, it would likely be delivered after June 1st at the International Centre (or whatever it's called), or delivered to Ottawa later (due to availability of trucking services, etc) (but I could apply for rebate as soon as they load it on the truck to Ottawa).
But yes, refreshing 20-30 times a day is getting a bit tough -- but my therapist reminds me that getting the new car is exciting, and I should look forward to it.