the website says
"Day Tickets are available for catch or release with a 3 fish limit"
and, in the club rules section:
"Only 3 fish of 10” or over can be killed in one day, after which the angler shall cease to fish. (Fish under 10” should, until further notice, be carefully returned to the water)"
does that mean
1 you can take 3 fish and then fish catch and release afterwards
or
2 you can't keep any fish and once you have caught and released 3 fish you have to stop

or
3 you can just fish catch and release if you want to
or
4 you have to take the first 3 fish you catch and then stop fishing
or
5 combinations of the above.
and, in the club rules where it says
"The number of fish taken is restricted to 9 per week (Sunday to Saturday) for the period of the third Saturday in March to 30th November." Presumably the missing clause is "per angler"
and finally - presumably when you buy the ticket you have to state which day you are going to fish? To put it more clearly, you can buy a ticket a few days in advance?
No apologies for pedantry - although I'm never sure precisely what that means.