I’ll add one little advice.
You should taper off your training on the week of if not 10 days before the RABRAI.
The week of is not time to gain fitness. By all means get a few rides in but short and slow will be best.
STRAVA will run even if you don’t have service. It acquires the signal from the satellite but it won’t upload until you have service. I often use an old phone just to run strava and upload vi wi-fi when i get home. this way i don’t use power on my real phone during long rides.