My mom and I went to Wendy’s for lunch the other day (we got the bacon and blue burger, in case you’re wondering). The cashier offered us a cup for water and I took one. We sat down to eat the burger and I noticed a sign behind the register that said seniors get a free drink. I checked google and there was nothing about it online, so we asked the cashier on our way our.
She said that yes, Wendy’s gives free drinks to seniors. She said, she thinks, seniors are 55 and over. Then she asked if we wanted another cup of water for the road. We declined that one.
Sounds like there’s no exact age for this but you do have to ask the cashier for the drink. You won’t just get it automatically if you look old (which is nice, actually, if you are a senior).