Are you talking about a Webcertificate? If so, it's been my experience that MyPoints sends them out in batches about twice per month. If you're lucky, you ordered yours just before they are scheduled to send them out.
It will be sent to your email and you then redeem it online by opening an account or depositing it to an existing account. If you want to be able to use it for shopping in B&M (brick & mortar) stores, you will need to order a card. It will cost you $6.95 to purchase the card. It looks like a regular MasterCard debit card and works most places that take MasterCard.
I recently had to replace my card because it was due to expire. Yes, I've been doing rewards programs for a long time! Anyway, it took less than 3 weeks to get the card after I called for the replacement. They replace expiring cards at no cost.
With September right around the corner, you will be cutting it close. You might want to set up a Webcertificate account now and deposit a small amount of money in it. Then order the plastic card right away. That way, even if the MyPoints webbie doesn't arrive until the day that you leave, you will still be able to transfer it to the existing account and you'll have a plastic card to use in WDW.
Another option that may work for you would be to print the page for your webbie account once you've received the webbie. Take it to your local
Disney Store and use it to purchase Disney Dollars. Some people have had success doing this but not all stores will do it.
Good luck, whatever you decide to do. Keep in mind that the webbies are good anywhere that takes MasterCard, so you won't be stuck with a useless GC even if you don't get it in time to use on your vacation.
