Sometimes parties come on suddenly, like our impromptu Cinco De Mayo fiesta! In cases such as these it is perfectly fine to invite people in a more casual manner. However, all of the same important information that would be on a printed invitation should be included in your telephone call, email or hand written note. If you are worried someone won’t receive your call, voicemail or email, you write them a little note and slip it in their mailbox with all the pertinent details. Something like this would be great:
Harry and I are having people over for a barbecue and to play board games tomorrow night at 7pm. I know it’s last minute but we would really love for you to come, I know how much you love playing Buzz Word! Feel free to bring a friend if you like. You can call me at 234-5678.