In reply to Juan S:
Agree with all others, I'd just turn up I'm sure you'll be alright. I rang them twice a day for about 10 days before finding a time when they answered. Try different times of day like 9am, 5pm, 6pm etc. because they are probably out working like someone said. I think they were more pushing the bookings during the pandemic than now though.
aaah you're making me jealous. My favourite campsite, love this place.