I usually have to wait a bit for my McD coffee to cool. But then, I do that with almost any coffee I drink. It seems that its always too hot for me. Same for almost any hot drink I get like tea or hot chocolate.
I always ask for cream and Splenda on the side. I've had too many times where it just doesn't taste right and plenty of times where they must have put three or four times as much cream as I like. Once the clerk put six splenda (I asked for two) in the coffee. Several times I saw them put in sugar and made them give me a different cup. Now I always ask for it on the side.
Although I still think McD is the best, if we all liked the same thing it would get pretty boring for some of us!