We have just spent 3 days with another family that we all enjoy spending time with.. the 'problem' is that their children really do not like each other. My kids usually bicker, point out each other's faults and are generally a little snarly to each other. Since they came back, they have been absolutely lovely to each other!! Offering to make food each other, asking what they would like to do.. it's like they say what 'difficult sibling relationships' look like and decided it should not be them. Well.. it lasted 24 hours at home... let's see if it's a permanent solution!!