Doing your own laundry is a great idea--I've even stooped to that a few times while on extended trips abroad. The washboard, however, IS TOTALLY UNNECESSARY. All you need to do is take a little liquid laundry soap or Woolite (I also take liquid fab softener), and wash things out by hand in the bathroom basin. Unless your husband has a real meltdown, you should be fine.
Alaska / RCL Vision of the Seas, May '98
Mediterranean / RCL Legend of the Seas, July '00
Caribbean / Celebrity Infinity, Nov. '00
Transatlantic / Pacific Princess Final Voyage, Oct. '01
Caribbean / RCL Adventure of the Seas, July '03
Caribbean / NCL Sky, June '04
Caribbean / Celebrity Horizon, Dec. '04