I wish I could help you...but I can't remember the last time I PAID for Disney gift cards at
Best Buy. I use my BB rewards earned from my BB credit card and BB gift cards earned from Swagbucks to purchase my Disney gift cards. I can tell you for certain that if you pay with a BB gift card, you do NOT earn rewards, but your purchase DOES count towards your status. I am an ElitePlus member, simply from the GC churning earlier this year.
I initially got the BB card to finance our emergency W/D purchase but I've also started using it for our dining purchases (double rewards) and whatever bonus they are offering each month. In July, it is 3x points for gas!