What kinds of expectations does the elaborate description of the castle in Part II generate?

Gawain stumbles upon a moated fortress, a beautiful castle with strong defences and intricate architectural flourishes. Awed and grateful, Gawain asks the porter of the castle for entrance and is greeted by a great, joyful, and eager company. He is welcomed by the lord of the castle, a massive, civilized, capable-looking man who sees to it that Gawain receives the best of care. After a great feast, his company learns that he is none other than Sir Gawain of Arthur's court, and they are delighted to have such an honored personage in their presence, the embodiment of good breeding and chivalry himself. There is always implicit the expectation of chivalric law to be upheld. There is no malice in the meeting. Their deal will go ahead as planned. Gawain will be tested in the laws of courtly love as well.