Hi Agent_Ibru!

The polygon for the playground already exists, so you don't need to add an additional point to represent it. For the accessibility information, use the wiki page to see the tags. https://wiki.openstreetmap.org/wiki/Tag:leisure%3Dplayground

Here are some tags you can use rather than lumping the information in the description: 

surface=* - grass, sand, rubbercrumb, woodchips etc
wheelchair=yes/no/limited if the equipment can be used by wheelchair users
min_age=* Minimum age of the user in years
max_age=* Maximum age of the user in years
operator=* - eg, the name of the local council or school
opening_hours=*
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            Published using OSMCha: https://osmcha.org/changesets/133137742
            