I've driven to Montreal several times to visit relatives. No issues with network connectivity. I have charged at Brossard and 2 of the Montreal Superchargers without issue (2014 w/ FUSC). I don't even bother with changing the display, it's easy enough to do the KMPH->MPH in my head.
I like the Rouses Point, NY crossing. Always the shortest wait (often no wait). Nice drive over on Rt 78/2 from Swanton (last I-89 exit in VT). Or take Rt 2 the whole way up the island (nice drive, not much longer time-wise).
Only real issue I had was dealing with a bad tire. On one trip I noticed a blister in one of the rear tire sidewalls on a Sunday afternoon (local SC was closed), but roadside assistance sent a CAA truck with a loaner wheel/tire, they changed it, and left mine behind. RA gave me the option of taking my wheel to the Montreal SC where they would replace tire, and I could go back for a swap, or I keep mine and return the loaner at my "local" (2 hour away) SC. But I'm in Boston more often than Montreal, so I got a new tire locally and returned their wheel to Watertown.