I love showing off my fabulous free bus trips!
When I first got my pass 16 years ago, I went to Orkney, from here south of Edinburgh, for a long weekend.
It was brilliant. The bus backed onto the ferry at John o' Groats, crossed the Pentland Firth and continued to Kirwall. There was a small charge for the ferry but otherwise free.
Since then I've been twice to the Isle of Skye and back; to the Mull of Kintyre; many times to Banchory near Aberdeen when my DD lived there; more recently to the Isle of Cumbrae.
(partly by train) and I use our local buses several times a week.
I have very few complaints.