I was thinking today about our local zoo - it is massive (140 acres apparently) and the paths are all about 5m wide. Do we think places like this could be opened soon? Social distancing would be easy, especially if they limited numbers and allowed pre booked tickets only.
Similarly safari parks where people stay in their own cars - super easy to social distance. Or gardens like national trust. It would actually be easier to maintain distance than somewhere like the beach because they can limit how many people go in.