Please read the problem below and identify all of the issues and post your answer by replying to this post.

In January, 2010, Mr. and Mrs. Brown learned of a rustic, but very popular, summer lodge called Mountain Pines, located in a remote section of wilderness in the mountains of a distant state. Mr. Brown wrote to Mountain Pines, describing both himself and Mrs. Brown as "city folks" who had never before been in the woods and requesting a reservation for a double room for June 1-8, of the following year, 2011. He enclosed a $100 check as a deposit.

Mountain Pines confirmed the room reservation with an unsigned postal card bearing its name in print, stated a total price of $500 and acknowledged receipt of the deposit.

The Browns arrived at the lodge in the early afternoon of June 1, 2011, only to be informed by the apologetic manager that he could not honor their reservations because all rooms would be occupied until the following evening. The manager suggested as an alternative arrangement that the Browns could stay overnight in a tent in a forested area adjacent to the lodge for only a third of the price of the room. The Browns reluctantly agreed, saying that they would do it only because they had no other choice. They paid the cost of the tent accommodations.

What contractual claim of relief may Mr. and Mrs. Brown assert against Mountain Pines?

So far I have Offer, Acceptance, Consideration