Imagine if fans at a Major League Baseball game were told they needed to wait until the end of an inning to go grab a beer and a hot dog. Under a new policy instituted this year, people with tickets for certain sections at every court — from 23,859-capacity Arthur Ashe Stadium all the way down to 336-seat Courts No. 8 and 16 — can move around whenever they want, even during play. Spectators seemed to love it on Day 1; might take some players a bit to get used to this, which also was tried at the Australian Open in January.