I haven't shipped Amazon to BCV, but I have to AKV and it's been fine. As long as you have the address correct something like
Beach Club Resort
123 Hurglass Lake
Guest pezgirlroy Arrive: 1/1/17
Lake Buena Vista, FL 55555
Obviously use the correct information, the package will get there. They ask for things not to arrive more than a week before you will, and keep in mind that it ends up going USPS as last mile, it will take an extra day to arrive. They get delivered to a central location, and then WDW (I believe) takes them to the resorts themselves. So shoot to have it a arrive 2-3 days before you do, and you should be fine. Now if BCV shares bell services with YC, then you may be charged a handling fee. Since YC is a convention resort, they get lots of convention attendees shipping down convention materials, so they handle them differently. And there is no real way to tell who is a normal guest and who is a convention guest, you may have to pay a handling fee when you go to pick it up. So if you have the option, tell Amazon to use as few boxes as possible.