@Matt N
Book wristbands well in advance for cheapest tickets. Choose home delivery for free if it’s a peak day. You will otherwise face a large queue to collect at the Ticket Centre.
Speedy Pass is good value if you visit on a busy day.
Big Blue Hotel is excellent place to stay. There are otherwise some decent B&Bs. Pick one close by for convenience and use Trip Advisor for reviews.
The Wetherspoons is one of the most expensive you will find anywhere outside London. Don’t be afraid of choosing somewhere else to eat. The restaurant in Big Blue is very good. As is White Tower at the Casino building at the entrance to BPB.
Throughputs vary wildly depending on how many trains are running on the coasters. Saturdays are generally most likely to see two train operation. So even if you visit on a quieter day, it may not mean lower queue times.
Read up on some of the park’s history before you go. It will make you appreciate it a lot more when you realise whilst you’re riding the Flying Machines that they have been operating for over 114 years - since 1904 or that Derby Racer was built in-house by the park’s staff.
Ride the woodies near the back.
Don’t expect the park to close at 7pm, even if they tell you this is their earliest closing time.