Susy, we did not have PS for breakfast the times we ate at the Maya Grill for breakfast in December. I guess it will depend on the time of year you are going, but chances are you will be seated when you arrive. We were seated everytime we went down for breakfast. For breakfast it was a buffet style with lots of choices(eggs, cereal, muffins, fruit, waffles, etc.) They bring you your beverages and you go up and get your food for the buffet.
As for the Pepper Market. You are seated at a table (if you choice to eat in the restaurant) by the staff. The server will bring you your drinks. When you are seated you are given a card to bring around to the different "kitchens". The "kitchens" all have variety of choices ranging from hamburgers, pizza, and an oriental food and several choices of deserts. There are some many choices of food that I can't remember them all. When you are at the "kitchens" they stamp your card for the food that you are getting. Each person may have their own card to be filled out. You can visit any "kitchen" you would like. You do not have to get all your meal from the same "kitchen". You can something from each place if you would like, including desert. When you are done you bring your card to the register and they add up all the stamps on the cards. At this time the 10% gratuity is added. As for the tipping your server I guess that is one's choice since they are adding the gratuity for you.
I know someone will be able to explain it a bit more that have been there several times.
GoofDisney thanks for the information. I will have to rememeber that when we return in November.
Thia