I hired a turf cutter to clear my veg patch area. I have a few tips:
1. You will need someone with you to get it into the car - they are pretty hefty machines. My local hire shop were very amused when I pushed mine home (about half a mile) as I had no-one to help at the other end. They did however take pity on me and come and pick it up - your local shop maybe able to do this for you. Listen carefully to their instruction talk as well - it is a bit tricky to get going with.
2. Do it when the ground is moist (and not frozen) I did mine the day after a lot of rain but the instructions said that you should water the area well the night before if it is dry.
3. Try to have a helper - it is pretty heavy going. The machine takes quite a lot of effort and then you have to roll up and stack the turfs.
4. The machine actually worked best for me when I was going forward more quickly - initially I was cautious and went very slowly which made it pretty tough and meant a very uneven slice into the turf.
5. Beware of stony ground - the machine leaps quite high when it hits something but I managed to keep it going most of the time.
6. Take note of how clean the machine is when you hire it. Most places require that you clean it before returning and I hadn't really looked. The upshot was that I spent quite a long time cleaning it and got a phone call the next day thanking me for it being in the most pristine condition they had ever seen it in!
It did work well for me and was worth the hire charge I think - I managed to haggle them down quite a lot so be cheeky and see what you can achieve.