Date: 9/27/2008 11:19 am EDT
(Sorry for the delay in the public response - we did respond privately to Lisa).
If possible, we'd suggested avoiding vibrations from the washer for another 48 hours.
As a reminder, after you grout:
Avoid use for 24 hours
Only light traffic from 24-72 hours
No cleaners, staining materials, or scrubbing for 7 days