Rent a vehicle for the trip.
Until this gets resolved, the bearings stand a very real chance of seizing. And you could be driving down the highway and see your own wheel passing you in the other lane. Just before you crash. Hopefully the crash won’t be too firey.
Bad bearings are bearings that are on the verge of sudden and catastrophic failure. You should get this fixed as soon as possible. This is not safe to drive on above parking lot speeds.