From what I understand, Disney discontinued the stockholder discounts because of so many people buying just one or two shares to get them.
Now would be a good time to invest, though. It's not likely this company is going out of business and the stock will eventually go up to at least triple what it is now. The last time it split it went up to $120 and then split 3 ways. Think about it... Eisner didn't recently buy another $10 million worth because it's a bad investment...
Besides, it is a good feeling to go to WDW and know you own a piece of it, even if you just missed it when you blinked.