1. It can be. I prefer mine still, like wine.
2. It depends on the mead. Some are like white wines, fruity and crisp, and I like those chilled just like white wines. Others are more deep flavored, maybe even with some tannic fruit, and are very good served at red wine temperature.
Well, it looked like I answered both questions with "it depends", huh? Sorry about that. What kind of mead is it? maybe stick a sample in the fridge and see how you like it best.