Been this year with my 3 year old to Whinfell, then a couple of months later did Skegness Butlins. Should have maybe done them the other way around I think as the atmospheres are very different 🤣. It’s a bit like comparing cats to dogs.
If you’ve got kids who like wildlife or outdoor/physical activities then CP is definitely worth it imo (although school holiday prices are sadly ridiculous). We were only there for 4 nights so just booked one activity on each full day we were there for my son - I remember thinking the activities weren’t as expensive as I thought they would be and my son enjoyed all 3 that we booked. We spent the rest of each day at the pool or exploring the site. I can see how it would get pricey with multiple kids/or if you booked several things each day though. We also ate out at the Lakeside Inn a couple of times - nothing special, but pleasant enough and a nice soft play for the kids.
The swimming pool at CP is fab - my son loved that it was warm and enjoyed the lazy river. He happily went daily even though normally he’s not bothered for swimming pools. He was disappointed with the colder, more run down feeling Butlins pool in comparison and we only went there the once (the changing rooms were also revolting 🤢,if people think Center Parcs changing rooms are bad they should see the state of Butlins…).
At Butlins we spent most of our time on the free fairground rides, which DS did enjoy. He’s not that fussed for the shows/entertainment - but if your DC enjoys that sort of thing then that is where I think Butlins really comes into its own. And of course Butlins has the beach too. Don’t risk the Fish and Chips on site at Rock and Sole though - we made that mistake and it was greasy, rubbery and tasteless (we didn’t try the other food outlets after that, but I’ve heard bad things about most of them tbh).
Generally I personally preferred the more restful atmosphere of Center Parcs so we will likely go there again. We might go to Butlins again if there’s a show on that DS might particularly enjoy - but tbh I think he enjoyed being off- site exploring Skegness on the open-top character buses (and collecting the different badges on them), than he really did Butlins itself.