This is what macys.com says. I think probably not bc it says Macys merch only and it technically not macys but LV.
Gift Card Terms and Conditions
For balance or customer service go to macys.com/gcbal or any store, or call 1-800-511-2752. Macy's cards are redeemable only for merchandise and in-store services at Macy's, macys.com and macysweddingchannel.com. Macy's cards may be purchased as a gift or given in place of issuing a credit to a credit card or a proof of purchase return from another payment method. Returns may be applied to Macy's card. The Macy's card may not be redeemed for cash or applied as payment or credit to any credit card account. Card receipts will show any remaining balance. Protect the card: the bearer is responsible if it is lost or stolen. Lost or stolen cards will only be replaced with proof of purchase and only for the value shown on our records.
Macy's cards are issued by Macy’s Gift Card, LLC. The card is required for all inquiries.
Macy's Gift cards sold on or after 2/3/08 do not expire!
No fees are imposed.
Yes you may, because I always use my Macy's credit card to buy in Herald Sq. Store. So if they except that, I don't see why they wouldn't take your GC. Also, they don't except LV gift certificates because they claim that they're part of Macy's shops...which works in your favor. HTH