The start date of a rehab usually doesn't change... its the end date that changes most often. Rarely, does it reopen early. More often, it opens on time, unless its a big rehab, then it might open a few days late.
If they have it scheduled to be down while you're there, don't get your hopes up. Plan to not do the ride.
Right now, SSE and BTMRR is going to be down while were there. I hope there isn't anymore that will close!
"Stopping in the middle is distinctly unpatriotic." Sam Eagle