As a Wednesday deadline approaches for …

As a Wednesday deadline approaches for players to notify their teams whether they wish to withdraw from participation, for whatever reason, there are three main sources of anxiety among the players and executives in the league: The location of the contained campus for the restart is a fresh source of unease. The N.B.A. chose Disney World for its single-site resumption of play for many reasons — business reasons among them, given Disney’s status as the league’s top media partner. But Orange County’s increase in positive tests over the past two weeks has made it an “infection hotbed,” as described by Perry Halkitis, dean of the Rutgers School of Public Health.