We went two years ago and really loved The Fighting Cock pub basically next door. You need to book, they are really popular
https://thefightingcockspub.co.uk/
We had exactly 4 of each, four glasses, mugs, plates, cutlery. It was washing up after each meal. Bit annoying.
Bring all things like washing up liquid, tea towels, kitchen paper, foil etc. They have gas ovens, so it was a bit of fun getting pizzas done as it was 30 years since I last used one.
Check if towels are included.
We went to the Marwell Zoo, nice one.
After the pub is a section where the ponies are around, you need to drive carefully they can just come onto the road. We stopped and they do come towards you so be a bit careful. Friends also saw them direct at the pub fence.
Our DD and our friend's DCs are older so I can't say anything how the activities are for toddlers.
The main restaurant on site is busy and if you plan to go there I would recommend booking.