Scott,
I agree with Craig Sweet on this issue.
I think bunkers tend to be overgroomed.
I'd prefer to see them raked on a "needs" basis rather than daily or regularly during the week.
While I agree with Pete Galea with respect to etiquette, it's more on the side of not leaving massive footprints in the bunker, as opposed to not leaving any evidence that a golfer has been there.
Specialty equipment and medal play have changed the way many, if not most, view bunker maintainance.
Then again, I'm one of those advocating the return of the "furrowed"rakes, ala Oakmont.