I have will call tickets for the Bruno Mars concert tomorrow. What is the address of the will call box office and what time can I pick up the tickets?

If you're parking in the Oracle parking lot, facing the arena, the Will Call will be to the left (up the ramp) of the arena. The address is the same as the arena (7000 Coliseum Way)

You can pick up your will call tickets at any time once the Box Office opens

The will call box office is on the concourse level between the the A's stadium and Oracle arena. It is the same address as the arena, the will call box office is basically the same as the oracle arena box office.