Are there no onsite rentals? Trying to decide between uber to and from LAX and just staying in the area since we're only there for 3 days with 2 being park days and walking distance to parks (tho early arrival day) or just renting a car..but I cant find an onsite car rental..if thats the case is it dramatic to get to these offsite places/is one better or easier than the other? Or is it not worth the hassle and should we just uber?