How cruise lines get you to spend more money on board

Description from YouTube

How cruise lines get you to spend more money on board. No they don't force you or try and sell you something you don't want. If fact the way they get you to spend more money is to let you do something you actually want to do. Let's find out this simple trick cruise lines use to get you to spend more money on the ship. Need to contact me with questions or to book a cruise? You can email me at dterris@travelonly.com or check out my website at dterris.travelonly.com Looking for information on out group cruise? Email me at cruisingwithdon@hotmail.com check out some of these other videos. https://www.youtube.com/watch?v=UaYaJNNVsCk&t=12s https://www.youtube.com/watch?v=tFYEUhFQ0t4&t=1s