CPC (Craven) have limited facilities for members. At present we have facilities for two bubbles (ie Riverside and Ivy, for those who know), with a 72 hour rest between, for members. We also have a fallow system for caving tackcle.
We also have a booking system for campervans etc which allows acccess to relevant facilities & hookup.
There are resitictions on dormitory usage which complicates hut usage and guidelines around cleaning shared facilities (kitchens, toilets etc) , which again complicate matters.
Don't underestimate peoples 'head in the sand' to covid (or other risks!)
There must be a temptation to bend the rules, but given the way COVID is heading (unless you subscribe to a Trump type approach) and I'm sure clubs are thinking carefully about moral as well as legal responsibility.
If you fiddle with the data on https://coronavirus.data.gov.uk/cases you can get an 11 fold increase in cases and a 5 fold increase in % positivity of tests, increasing hospital & icu admissions and deaths. We should be careful if we don't want April to like like a good time!