I've never taken it but I know the I-Ride trolley goes to Sea World,I'm not sure if it goes to Discovery Cove but there has to be shuttle from Sea World over to DC as they're literally across the street from each other.If there's a stop in the Central Florida pkwy I guess you could walk in to DC,but I've never seen people walk in,call and find out but the trolley fare is really cheap like $1.25.