Im gonna be different here.....
My car is done (by the previous owner) and i think its brill.I only have to wash and leather the outside for a polished look. I have polished the car before and it took 4 hours then there was the hassle of blacking all the plastic that had got polish on,and its taken ages to get rid of it.
Are you having the inside done too? I think thats worth it too, like scotch-guard to protect from spills etc.
If you have got the time to spend ages polishing your car then just have the inside done, but if it was upto me i would have it done everytime.
Gav.