Hi CW999,
I have 2 Maine Coons aged 14mths and 11mths and when I got them I said that they would be indoor cats only and would only go out on a harness.
Well they did take to the harnesses they would walk about and investigate but they never ran about or played out side even on extra long leashes, so I one day decided to just let them out with me supervising in the garden and they loved it they were jumping and running around and playing with each other in amongst our shrubs and trees, it was so much fun to watch.
So we cat proved the garden of easily accesible escape routes for (Maisy Moo) who is a little monkey and they go out at least 2 to 3 times a day sometimes most of the day with supervision, they are so funny as they really look forward to their outings I only have to rattle theircollars and it dosen`t matter where they are they come flying and skidding to the door to go outside.
I would certainly say that some outside access it entertaining for them and would always let mine go outside but I would not let mine go outside alone I would worry to much