I would get in as early as possible and leave after ride close times.
If you can get ERT, get there before the queues build up for ERT and get in first. Then do Wicker man first (if you miss the Wickerman for ERT, then do this later), forget re-rides, just go around the park and do all the big roller coasters the once before lunch and then go and enjoy the rest of the park. The park tends to quieten down again towards the end of the day, so plenty of time to get re-rides in before closing.
However, this week should be the busiest week of the summer holidays with today being bank holiday. Saying that, I've always manage to do all the rides on the Firework weekends which is supposed to be the busiest days of the season. However, this seasons bad ride operations has inflated the queue times and will make getting on everything more trickier.
Forget eating or drinking at the resort outlets or restaurants, bring your own pack lunch and you can eat it in the queue lines.