Preopening reservation

I have a Tusker House 8:20am dining reservation. Park opens to off site guests at 9. What do I do to access this reservation? How do I handle it at the parking, the entrance etc?

Total Newbie here.

Thanks in advance.

“For those of you staying off-site, if you have a dining reservation in the park before it opens, you will be allowed in early (usually about 30 minutes before the start of your reservation). Look for cast members with signs for reservation check-in, or specially marked turnstiles.”

I would arrive very early in case they seat you early. Then you could possibly hit an attraction before the 9:00 crowd arrives. (I have no idea how long TH breakfast usually takes)