Thanks, everyone.

Hoping, yeah last time I was hospitalized and asked to leave on my own volition, I was instead put on extra restrictions and was labeled non-compliant. Of course, they didn't share that with my T. They did what they wanted and I had no say, even though I had been calm and practical in my mind. Granted, it was a different hospital but it left a bad taste in my mouth. I can't risk 6 days being all I'm going in for.
With the driving, my brother's too young. It'll be my fiance and I alternating every few hours, so I won't be doing the stretch all by myself. My brother did promise to be awake during mine, though. So if I start having a problem, he can talk me through and then I'll give my fiance the wheel as soon as we hit a rest stop.