Anyone recommend a cl nearish to blackpool?

Hi all, I'm thinking of taking my boys to Blackpool (age 16 and 14), I've always promised to take them and never got round to it. I thought we might go for a long weekend in the summer.

The site doesn't have to be in Blackpool but ideally not too far away, say 30 mins or so. I've had a little flick through the search on here, but will have a proper look. Must have toilet and allow dogs.

Thanks all