For Plano we get there about 15 minutes before the gates open and park in the eastbound left turn lane on spring creek on the west side of the tollway. The Plano cops don't like it, but one cop can't write 200 tickets and the people on the service ramps backing onto the tollway are much worse. When the gates open, the lights under the tollway ensure you'll get metered in (there is a left turn arrow that lets about 4-6 cars in per light cycle). I like going early because you get a parking stall and you can see everything and still be home by 9:00 -9:30 AM (i'm about 30 minutes away). We have multiple cars that fit in with different groups: Mustang, Miatas, Jaguar so we park those with the group but with the Buick or 2+2 we just park them in a good spot.