Oooh, try to go when there is an event at the College of Piping in Summerside and go!! You won't be disappointed, especially if you love bagpipes and highland step dance. We attended the Canadian National HOG rally when it was in PEI and they had a steak and lobster dinner for us there and loads of entertainment. Most definitely the highlight of the trip!!
https://collegeofpiping.com/
While you are in that part of Canada, you may want to try to schedule in some time to go down to Cape Breton in Nova Scotia. There is a ferry that goes across Northumberland Strait. I prefer Nova Scotia to PEI for scenery, but that is just me. I have never made it as far as Cape Breton and it is most definitely on my bucket list of places to go.