Regarding the obd11. Check out Carista. It’s a Bluetooth dongle (for lack of a better term) that you can buy on amazon for £15. It’s supposed to be very user friendly. Just plug it into the port and connect it via Bluetooth on your phone. You download the Carista app and use it to turn on or off all the fun little tricks like road sign recognition and needle sweep on startup etc. There’s a monthly subscription or something like that but it’s free to use for the first week and You won’t really need it for longer than a week to customise it however you want anyway. I’m sure there’s an option there to close the tailgate via the fob.
ps I ordered my Tarraco a couple of weeks back but my lease doesn’t finish until October so won’t be able to collect till then. (I already asked). Would love it if you kept updating this thread with your real world thoughts etc. Like how good does the park assist work?