Hockey mom here. Our son learned to skate at age 3. He played hockey right through til he quit at 16. My exh made a rink in the back yard every winter and we'd usually have several of the his teammates over on the weekends. We also lived around the corner from an awesome park with a pond in the middle that would freeze for outdoor skating each winter. Really great memories. If you decide to do it, make the liner out of the material they shrink wrap boats with for winter storage.
The kids will love it and so will you.
M 20+ T25+ S ~15.5 (BD) BD 4/6/15 D 12/23/16
"Someone I loved once gave me A box full of darkness. It took me years to understand, That this too, was a gift." ~ Mary Oliver