All the rides that require a locker all have lockers located rite there at the ride so u dont have to worry about finding lockers or having to walk back and forth from a central location. There are 2 options of lockers at each ride, one option is the free locker which is pretty small, made for purses, small bags, fanny packs, cell phones and keys. The other option is a pay locker ($2) which is a lot bigger option made for large bags, backpacks. Note, although the free lockers are small with an opening of probably 12" wide by 5" high, they are very deep, if u can smash ur bag flat, u will be able to slide in with plenty room. But the large lockers are literally only $2 but do require a card to swipe to rent. Both option are available for 4-5hr but u basically put ur bags in locker, ride the ride, grab ur bag soon as u get off ride so u wont ever need the full allotted time. Now, all the lockers have automated kiosks scanners u will use to rent ur locker. The way this works is very easy, u just go up to the kiosk, use one of UO park tickets, dosent matter which ticket, scan the bar code on back of ticket, once it scans ur ticket a locker door near by will just pop open, grab this locker but verify the number on the kiosk and the number on ur locker door match, ur all set, put all ur belongings in and go ride, but note a VERY important part, DO NOT put the ticket u used to rent the locker in the locker, u will need that same ticket to open ur locker again, ur aloud to keep ur tickets, money, credit cards, things like this on u. Once u get off the ride u just go back to the exact same kiosk and scan ur ticket again and the locker will pop open and grab all ur stuff. Also, ur only aloud to open and close the same locker once during ur rental. For example...say u rent a locker and put all ur bags in it and close the door but realize u forgot to put ur cell phone in it, u cannot re-open the locker and add ur phone, once u open the locker after u closed it, ur rental is over and the next time u scan ur ticket it will give u another locker. Now this does happen alot so dont worry if this happens, just have someone wait at ur locker and grab a nearby cm and they can open ur locker. The last thing I can think of is if u cant fit everything into 1 locker u can rent 1 locker per park ticket. So if u need more room by all means, rent more lockers just remember which ticket opens which locker and be sure to keep all tickets on u. Hope this helps ya a little, good luck and have a great trip.