Hi, William, Coffee pots are not available at the All-Star Resorts except for the Family Suites at All-Star Music. A really easy solution, however, is to purchase a refillable resort mug. For about $12.99 plus tax (price subject to change) you can get unlimited coffee, tea, and soft drinks for the duration of your stay. No coffee pots, no cleaning, no mess, and unlimited hot coffee - that should work!
As far as temperatures go for March, an average day is in the high 60's, but temperatures can rise up into the high 70's. I suggest going to
www.weather.com just before you pack for your trip to see if any unusually hot or cold weather is headed toward Central Florida.
Enjoy your stay in Walt Disney World!