Rivian will sell you a DC adapter for $300. A2Z has one for less than half the price - and may be just as good or better.
And Rivian is not supplying the promised L2 NACS adapters. Inquiries have been radio silent for weeks.
I got my 26 R1S three weeks ago and I'm still waiting for Rivan to send me the L2 NACS adapter. The A2Z adapters that I had for Gen 1 worked great and were very well made.
The Tesla app will tell you which chargers are open to non-Teslas. The subscription price is worth it if you are taking...
Some things are not in the manual. Under the front cover for the windshield wipers is a 12 volt connector suitable for jump start cables or trickle charger. With close access to the firewall you don’t have to unbolt the passenger seat for 12 volt connections.
Phone, GPS, Thinkware camera...
I put the Defender 275/60 R20 on my previous Gen 1 to replace the Pirelli's. QUIETER and the range improved about 5%. It took the tire size update to correct the speedometer. I think I used the Goodyear profile. I traded in for the Gen 2 so I can't look back.
Defender is my go-to tire. #1 rated on Tire Rack. It's a light truck tire so it is sturdier than most. It is not for serious rock climbers but it is fine most off-road situations.
https://www.rivianforums.com/forum/threads/california-to-white-pocket-az-in-our-r1s.36796/
Works well in...
As others have said, stay to right if possible. The Tesla owners at Tesla stations have been helpful and understanding. (The ones at non-Tesla stations have been a different story.)
There two 50kW DC ChargePoint chargers in the City garage that are free - courtesy of the local merchants - and are available as long as a Tesla is not using it for prefered parking. Stroll a few blocks into town for a meal and brew and then go look for Moose and BigHorns.
There is now a RAN in Gardiner. West Yellowstone has L2 chargers at the Holiday Inn and Grey Lodge. Jackson has L2 chargers at Lexington and Springhill Suites - plus a free 50kW ChargePoint in the city parking garage. You are “Bison speed” in the park so efficiently is really high.