I brought jeans, but never wore them. All day I was either in a bathing suit or shorts. Dinner was either dockers, slacks, or my tux pants. Then it was back into shorts for the rest of the evening.
I can't imagine why anyone would want to wear jeans to the dining room at dinner. The setting is quite formal, even on the informal nights. I'm not telling you what to wear or criticizing anyone, but I wouldn't recommend wearing jeans into the dining room at dinner. That isn't proper etiquette and I personally think it is tacky and rude.