The host or hostess put considerable time, effort, and money into hosting you. Return the kindness by being the best guest ever, starting with sending your RSVP promptly and letting the host know about any food allergies. Then, do the following.
Watch the Clock
Your hosts went through a lot of effort, so show consideration by arriving on time; if you are “fashionably late,” which is to say 30 minutes or more after the set time, everyone might have to wait on your arrival to be served. On the other hand, showing up too early presents another set of issues: The hosts might not be ready to entertain guests, or they may still be getting dressed or working in the kitchen to get the food and drinks ready….