You are perfect as you are!
Immediate confirmation via e-mail and phone. Made a couple of changes, both additions and deletions and they were very helpful and again confirmation immediately.
First time users of this service during our trip to WDW from Canada. The website had great choices and the quality of the products on delivery were very good. The email updates provided assurances all was being handled well. Strongly recommend this service to anyone travelling to parks - even if you're on the dinning plan.