Once you have purchased your wine subscription you can add other wine or wine varietals to your existing wine subscription without going through the checkout process again.
Login if you are not already logged in.
Navigate to the Wine Shop and choose your wine or wine varietal.
the delivery type and quantity
Choose the Delivery Type - "Ship to me" or "I will pick up" and the number of bottles you want (Quantity)
your subscription interval
to existing subscription
Select the button Add to existing subscription
Confirm to add the product to existing subscription order. Select the Add button to confirm your addition. Pressing the Escape key or clicking the "x" backs you out of this dialog.
Complete! You've just added a product to your existing wine subscription and there is nothing more you have to do except enjoy it when you recieve it.