I'm not completely sure music and dancing are always needed. Like, if I have a birthday party, it's nice to have some music and maybe dance; it's fun and relaxing with friends. But, if I just want to chat with friends, music and dancing aren't really necessary. It's just as good to be around people I care about at a party in a restaurant or a park as it is to have a party with music and dancing at my place. The main thing is to enjoy and have a good time.

Not really. While music and dancing are common at parties, they're not essential. Some people feel awkward about dancing in front of others. Plus, many guests prefer chatting over loud music, so it's nice to have a quieter space for conversations.