Just keep in mind that they are Medium sized dogs.
So when they are around 1 1/2 - 2 they need just as much room/outdoor space as any Lab, shepard or retriever.
They are herding dogs so if you have cats or children they will be corailed (<--spelling?)
they will herd other dogs and people. Its halarious to watch them herd cats.
They can be obsessive with a toy as well, so if you can find that magical toy you can control them much easier because they kinda do whatever they want.
Best frisbee dog i ever owned was my Cardigan, she would play until she was crawling and would still want to fetch.
My pembroke on the other hand liked big bouncy balls and to chase/herd my cardigan when she chased her frisbee....he also liked pinecones....he would pick one up and just carry it with him in his mouth. Long walks with him and his pinecone
Thanks for all that, but I am well aware of their adult size and their space/exercise requirements. I've spent a lot of time dog sitting a few pembrokes and have family members that have them also. A corgi is the smallest of my favorite breeds. After corgis we plan on owning a few malamutes and Bernese mountain dogs as well.