You may want to explain to your partner that what they consider roaming and exercise, can be pretty stressful to the snake. Roaming tends to evolve open areas in the middle of a room. All of which goes against a BP's natural instinct to hide from predators and wait to ambush prey.
If you turn a BP loose in the middle of a room, 99 times out of 100 they'll make for a wall or the nearest thing they can get under. There's a reason they do that...