It’s not far to Tenby, should still be pubs open for grub, there are a couple of eateries on site, Wetherspoon type/quality tbh, but ok, themed like a medieval banquet hall (sort of, bit odd), think there is a nicer restaurant too.
Accommodation is modern, well insulated, basic but nice, everything you need. Site it reasonably steep.
I went for a single night (family down there), ride canaston woods in the morning, some reasonable trails in there, you can go out the back of the site, into woods, hang a right over bridge, carry on til main road, cross over & a fair bit more that side, all quite flat but some very stoney sections & fast singletrack.
Alright for an hour or 2, more if you explore bridleways.
Bluestone is ok, nice enough, great for kids, but I just found it a bit bland