As soon as the words reached William he ordered camps to be built for them, that was out of consideration as druids didn't like to live inside cities. In this condition, they might put up with it but he didn't want to trouble them more than they have.
Cain stayed with the guards and Alaric as they were setting the camps, They had another mission thought. "We received enough bread, beans, and dried meat. This will be able to sustain us for a few days." Alaric said as he inspected the bags brought by the guards. "Sorry, this is all we could afford to give you. Our winter supplies are not that high." The guard who was driving the carriage said, he had just returned from the food storage.
Cain knows he was either lying or didn't know, this year they have gathered more than double what they need. But that was in preparation for the anticipated war with Ourals, William can't risk losing a war because they have given a lot from their supplies.