Fab thanks. I've not got my car yet (probably be waiting ages yet), but my Wife's got hers in July and experiences this MMI reboot/reinitialising problem all the time (always when driving in the same areas), so I'll tell her about the suggestionYes, I use CarPlay and it always connects automatically when i get into the car, regardless of whether im logged in as a guest user or my normal account.
I guess one difference is that you won’t have your navigation bookmarks saved and other things, but so far I did not notice any difference.
Better than the mmi rebooting