After four months of waiting and planning, the NBA bubble is ready to be tested.

The first six teams — Brooklyn, Denver, Orlando, Phoenix, Utah and Washington — are scheduled to arrive Tuesday at the Disney complex. Another eight teams arrive Wednesday, the last eight arrive Thursday, and with that training camps will be on the cusp of beginning.

If the plan works, all teams will be at Disney for at least 5-1/2 weeks and some teams will be there for more than three months. And not everyone in the league has an abundance of optimism that the experiment — involving daily testing, separation from...