Bertucci's usually offers a $5 bonus on a $25 GC purchase this time of the year. For the next few "double bonus" days, till 12/25 they are offering an additional
$5 bonus "Thank you card", meaning $10 bonus on a $25 gift card purchase.
Can be purchased online: https://bertuccis.cashstar.com/gift-card/buy/
and I believe in-restaurant too.
$25 gift card (or e-gift card) does not expire
$5 + $5 thank you cards must be used between Jan 1, 2018 through March 31, 2018
Fine print for the Thank You cards:
"THIS IS NOT A GIFT CARD
*Get (2) $5 Thank You Cards (TYCs) for every $25 Gift/eGift Card purchased from now until 12/25/17. Must redeem TYCs between 1/1/18 and 3/31/18. TYCs are for single purchase, food only. TYCs have no cash value, are not good w/other offers/discounts/deals, or for purch. of Gift/eGift cards, and are not good for tax/tip. E-TYCs cannot be combined - only (1) per check."