Don't lay on the soft cushy rails... no matter how comfy they look.
Watch out for trains!
Need ticket vending machines. The guy who sells tickets is not friendly.
Don't run across the tracks in front of a train. Everyone else gets delayed...
Wheaton's Union Pacific / West (Elburn to/from Chicago) Full Time Schedule is here: http://metrarail.com/metra/en/home/maps_schedules/metra_system_map/up-w/schedule.full.html
If a train is approaching, stay behind the yellow line
Go out to eat at Ivy Restaurant if you get the chance. Amazing food, incredible setting.
The stationhouse is truly a must-see! I'm pretty sure that a lot of work, time, and patience went into its construction.