My poor DH...so I was worried about our rented stroller getting swiped so I brought a bike lock for it...just like one of those rope locks with a key...first day we locked it in MK all over the place, heck I locked it right to the fence around the carousel...nobody said anything...go to AK the next day, lock it to a little tree in the stroller area, get back and there's like 3 security guards there going through our stuff! DH goes to get it and they gave him the 3rd degree about how it's a violation of homeland security and you can't lock up ANYTHING in the world. I got my butt chewed for that one They said if they see any locks on strollers it's a red flag and they immediately search it and find the owner! How embarassing...I just didn't want it getting stolen...but we never had issues, by the end of our trip I was leaving shopping bags in it, everyone was! I left the lock in the room after the 2nd day though! So just a warning!