Social Deadlines

Staying at a Friend’s Home

Aim to: The "fish and guests stink after three days" rule is useful, but close friends may want you for a longer time. Stick to the original dates, even if they insist you stay longer, says Downing.
If you are late: If unavoidable events prevent your leaving on time, offer to take your hosts to dinner so you can relieve them of cooking duties.
Tip: Don't show up with unexpected guests. If you're not sure who's invited, ask politely.

Sending a Thank-You Note

Aim to: Mail it within two days of receiving a gift, being a guest at someone's home, or enjoying any other act of kindness. Notes for holiday and wedding gifts can wait until the frenzy of the event ends.
If you are late: "Write a thinking-of-you note instead," says Hopkins. Mention that you still recall the wonderful dinner or that you've been enjoying their gift.
Tip: A job-interview thank-you note should be mailed the same day, Bremer says.