magical extras

Just received my magical extras (including the most adorable luggage tags I have ever seen) and I got a card that I can use to present for discounts at various restaurants and shops. My question is can you only use these once or is it a repeating discount throughout your stay? For example, I...

I noticed that booking a Disney world package through Costco (on-site resort and park tickets) was slightly cheaper than booking directly from Disney. I am wondering if it is essentially the same in terms of perks? Is there any downsides or anything I won't receive if I book through Costco? For...