All work and no play makes Jack a dull boy. We need to work to pay the bills, but we don't want to work all day, every day. Every now and then we need a break. So, we look forward to, and take vacations!
Take a shot of people who look like they are on vacation. You might pick a crowd with one who stands out, or simply an old couple on a cruise. Are they on a metaphoric vacation (sleeping in all day, surfing the internet and eating cold pizza and warm beer)? If it's not obvious, please give a description why it's your definition of 'on vacation'. Animals in the shot are ok, but you must have at least one person. Have fun!