Best fit
A meal, free attraction, short hotel walk, compact attraction, or early show can work if the timing is clean.
Before a late flight
Use the last hours. Protect the airport clock.
The goal is not to squeeze in one more giant Vegas mission. It is to finish strong without making the airport stressful.
Fast answer
Stay on the Strip or near your bags, choose something easy to leave, and build backward from the airport.
Bad fit
Do not schedule a long Grand Canyon or Hoover Dam outing on a flight day unless the provider timing clearly leaves a conservative airport margin.
Bag problem first
Know where your luggage is and how you are getting it before adding another attraction. Logistics beats one more photo stop.
Keep deciding