Skara brae, ring of brodgar, skail house, highland park distillery, pick one but you’ll have to nip round pretty quick, thankfully traffic jams are non existent.

Personally i’d do skara brae, then skail house (right next to it) followed by a quick 5 mins run round the ring of brodgar then sit down in the middle for 5 mins, contemplate where you are, what you’re doing with your life, where you want to be, how to achieve that then finally a shopping spree in the distillery, should be just about doable in under 3 hours.

Search out the Italian Chapel?

BTW, I spent a week there a few years ago in the middle of winter, in a one man tent, with proper storms and rain,hail,sleet,snow etc..etc. and it was one of the most amazing places i have ever visited, i did absolutely nothing the entire time but walk about or cycle around and just sit….for ages, here….there…..anywhere. I’d go back t’morn, dunno what it is about the place but it seemed to calm something in me and thinking back about the place now reminds me i need to go back soon.

Maeshow.

Although with 2 hours, assuming Kirkwall Airport – I would dive into town and mooch about Tankerness House museum (very good) and the Cathedral. Not really enough time for the distillery IMO.