To be joyful and laugh in a dream is usually a sign of a successful partnership to come. To share fun moments with a large group indicates success in business. To hear children laughing indicates strong health.
If you are attending a celebration and having fun there, it normally signifies satisfaction that you will experience in your business or romantic life. It depends on which people surround you at this celebration: men – business, women – love. For women, the interpretation is reversed .