['My in-laws just suddenly showed up yesterday and said they were staying for the week. I had no warning at all but I guess they were trying to make it fun, ha ha.']
Oh no! I would have a heart attack! Are you able to take time away from life so unexpectedly to spend time with them?
My in-laws just suddenly showed up yesterday and said they were staying for the week.  I had no warning at all but I guess they were trying to make it fun, ha ha.