Surely with the amount it costs to have a break there, the last thing you’d do is go out, away from the facilities, for a few hours ….
Tbf if you go outside the school holidays it’s not excessive. We just had a mon-fri trip with our two kids and the PiL, stayed in a lovely two story cottage with use of numerous facilities for £600 (£300 for us). Happy with that.
OP, don’t plan on going too far as it’s a pita to get your car mid stay and for what you are looking for you’ll probably get enough riding time just exploring the site. Plenty of bits and pieces to have a look at on the way round. Saying all that, my lad just wanted to get to the pool!
Don’t forget that although you can’t get in the accommodation until 3pm and have to leave by 10am you still have full use of the facilities so get there early first day and stay as late as you can be bothered last. Think we left about 2.30pm the other week after a morning in the pool and a leisurely lunch.