I was under the same impression that the parties was only for past guest on only 7 day or more cruise but when we took a 5 day cruise on the Holiday we did indeed recieve invitations to a past guest cruise party. It was held the night we had formals and it consisted of free champagne and snacks such as cheese and crackers and fresh fruit. We also had a band singing mostly old R&B tunes. Don't think I would attend it again though because it was not at all "a party". Most people started walking out after a couple of songs. Hope that answers your questions.