In response to Naiya:
I believe that the biggest meal would probably be dinner, since lunch is in the middle of the day and could post an inconvenience for pavilion members that have long-lasting jobs. I'm thinking of hunters in particular, since a hunt could very easily begin before dawn and not end until evening. Other time-consuming jobs like herding and scouting, etc., could likewise be very difficult to carry out if someone was to suddenly stop in the middle of the day and go have lunch.
Dinner, however, is at the end of the day, which would be a far easier time in which workers could finish up their tasks and come home. Particularly if there was some sort of custom stating that people should be home by sundown, making the mealtime take place just before dark. In addition, humans are more inclined to sleep after a large meal, so it would make more sense for the biggest meal to be at the end of the day instead of the middle.
In response to Amunet:
Hard cheese does take a long time, and for that reason I believe hard cheese would be less common. However, I believe that Naiya is correct in saying that cheese as a whole is an important staple in the Drykas diet. The reason for this is that, to my knowledge, you cannot be a "proper" pavilion unless you have dairy animals. Every pavilion has something that provides them with milk, and the larger ones might very well have many gallons coming in every day, to the point that it simply isn't feasible for the pavilion members to simply drink it all. With so much milk, it becomes absolutely necessary to process it into different forms of food simply because milk is liquid, and therefore cumbersome and awkward to carry. I feel like soft farmer's cheese would be very common for the simple reason that it is a solid dairy product, and therefore far easier to transport. A warrior riding out in the Sea of Grass would find it far easier to bring along a hunk of cheese than a container of milk.
With that said, there are certainly far more things to do with milk than just cheese. I once came across an article detailing Mongolian cuisine that detailed a sort of dried cheese-milk ball, but I'll have to go digging for it.
In general, when talking about Drykas food, I tend to use Mongolian nomadic foods as a point of reference, while also keeping in mind the assumption that the Drykas probably have access to more vegetables and plant matter than Mongolians do. With that said, the Mongolians, who are a very horse-based culture that rely upon their livestock to survive, have two "food pillars" that define their diet: the "red foods" and the "white foods." The red foods are, of course, meat-based, but the white foods are entirely based on dairy products such as cheese, yogurt, airag, etc., which every family is able to produce by themselves despite being entirely nomadic.
Also keep in mind that Endrykas is a massive trade hub. While a pavilion out on the Sea of Grass will only have access to what it makes and gathers on its own, many different pavilions move in and out of Endrykas regularly. Therefore, it is logical to assume that people in Endrykas have access to things that they otherwise wouldn't. While hard cheeses might very well be rare, that rarity could also make them very valuable as trade goods. A pavilion might make and age hard cheeses in very small quantities as luxury foods, and if this is the case, then Endrykas would be the best place to get them. In Mongolia, airag is a fermented milk drink that is highly prized; every family knows how to make it, and they enjoy improving and comparing their product to those of other families. Maybe the same thing could be done with hard cheese, on a lesser scale; though rare and time-consuming to make, a pavilion's aged hard cheese could be as unique to them as their family windmarks, and therefore add a culturally-charged layer of importance to using them as trade goods.