Hi, Chris! Your first trip to Disney World . . . how fun!!
Since I don't know your dates, I cannot check to see if the hours are posted yet. Generally, they are posted about 2-3 months out, but that does vary, so keep checking back. Since you are asking about the Pepper Market, I am guessing you are staying at Coronado Springs. I stayed there in December and really liked it. It is a beautiful resort.
For your Dining Plan, you can check
HERE. You can select which dining plan you have and it will give you all the details you need. Once you decide where you want to have your table service meals, you can call up to 90 days in advance of your trip to make your dining reservations. The phone number for that is 407-WDW-DINE (407-934-3463.)
When you arrive at Disney, stop by guest services to pick-up your "1st Visit" button! I hope your first trip to Disney is magical!