Good news - I hope it is all working out well. If will be just that bit better when you are in your own van. Not long now hopefully.
We have a selection of Hyper Stalking experts in the forum who graduated late last year. They, (+me) will no doubt be chomping at the bit to watch you track your pride and joy all the way from the Factory to your driveway/garage. Like
@Loz says, expect a good 2 weeks, maybe nearer 3.
Positive thinking suggests to me that although the shipping bit will probably take as long as it normally does, by the time your vans get to your dealers there should be no 'backlog' at the dealer, as surely they've been twiddling their thumbs with nothing to do since mid Dec'17!!! Pre-delivery checks should be done to your schedule with any luck. This assumes of course that all of the other
Emissions Gate2 victims are not all using the same dealer.