PARTY-- Frankly speaking, whats party?? If we get to understand, or rather answer this simple question, we can surely be the best of the guests.... Just give it a try
What I believe is that a person gives a party to express his joy regarding something, which is of value to him/her, not necessarily of any value to us. But as long as we are there, we are there to be a part of his happiness. So, at no times we should make that person feel that his achievement is useless, or of no value to us. it makes him feel at his worst or depressed.
WE should also take care that we are not at our own homes, and behave as per the general norms of the party, so that the host is not embarrassed in front of others by our behaviour, or by having us as his guest.
In this world, when no one has time to do something for others, we can atleast add by being a part of someone’s happiness, and that’s what parties are for.