Vern, we managed to get a Wii in time for March break... but it was challenging. Our plan was to call every store from Wal-Mart to EB Games every day to see if any had arrived. After many "we just sold our last one" calls we did locate a few in Smiths Falls and got there before they disappeared.
Come March break, the kids were overjoyed (they had no idea we'd kept it under wraps for over a week). And the stories are true, it's simple and fun. Pretty much anyone can pick it up and play.
Good luck with the search!