Take a cell or camera Picture of where you park

[keliblue]

This has saved me on many a trip.. use your cell phone or digital camera to take a picture of the row your parked in.. at the airport or in a WDW parking lot. Most times your so excited to get there you don't take note. I also take a picture of the rental car license plate

Make sure you delete the parking lot ones when you change parks or it get a little confusing

 

[Havana]

Great idea! We also use an app called parkdroid. It marks your spot and then when you go to find your car it leads you right to it with a compass type of screen.