Most of the time just leaving Tag mode on doesn't do much, unless you are near a Wi-Fi output signal. And if you are near one, you should receive something instantaneously.
So try this-
Just go to the nintendo channel on your Wii, and go to the DS Demo service, just click on any demo and then wait for it to start transmitting.
Go onto tag mode (on Re:Coded) and a balloon will appear.
Just back out of tag mode, and then go onto it again for another balloon (can be repeated as many times as you want.)
I did this yesterday and got 22 floors, and some random outfits.
Thats probably the easiest way I know to get things.