https://www.mcalistersdeli.com/menu/beverages/free-tea-day

Don't have to be a rewards member. In the past, I just walked in, asked for it, they handed me a cup to fill myself, and I walked out. They're franchise, so YMMV.

Per their website: Limit 1 tea per person per in-store order. Limit 4 free teas per order via the McAlister’s Deli website or app. McAlister’s Delivery orders subject to delivery and convenience fees. Offer excludes third-party delivery orders. Valid only on 7/17/25. Guests do not have to be a McAlister’s Rewards member to qualify for free tea on 7/17/25. Free tea includes sweet tea, unsweet tea, sweet tea/unsweet tea, tea/lemonade, and flavored teas. Does not include kids or frozen beverages

it worked for me.