visiting spain for the first time :). we are arriving on Sat Nov 30 at 9:45 (if the flight is on time). its united so should be terminal 1. i have read a lot of posts and i am torn between the airport express bus or going over to terminal 4 to catch the cercanias. we are traveling with carry on only. my thinking is there will likely not be a lot of traffic on a saturday. on Sat, will the bus take more time vs traveling over to terminal 4 and finding the train? i figured it would be about the same? was trying to make a 1PM AVE to Seville. i would appreciate any thoughts. i don 't rely want to spend the money on a taxi. thanks so much!