Hello Carol!
Welcome to planDisney! Carol, oh no! You are arriving tomorrow, and based on your question it seems your
MagicBand+ is not arriving on time. I'm sorry that you are dealing with that.
Guests staying at a
Walt Disney World Resort Hotel have a chance to purchase the MagicBand at a discounted rate and have it delivered to their homes. I'm not sure when you made your order, but the only way it can arrive at your home before you leave is to make the purchase 11 or more days before you arrive. If you purchase it 6 to 10 days before your reservation start date, the band is shipped right to your Walt Disney World Resort Hotel. Just head to the Front Desk and ask the Cast Members if it has arrived. If for some reason, you don't make the order in time then you will have missed the opportunity to get the discounted band.
If you have not ordered your band or would like a band to use onsite then know that regular non-discounted bands are available to purchase at so many merchandise locations at the Resort and in the Parks. Realize, that you can still access the Parks and your room with a simple key card that can be provided for you free when you arrive. Again, those lovely Cast Members at the Front Desk will be able to assist you in getting those cards. They are free and are a good alternative for your trip. Those bands you left at home can be used for future trips as they are rechargeable and pretty durable.
I hope this helps and you have a magical time!
Happy Planning!
-Nimmy