McDonald's, aiming to become a destination for buying beverages, has used dollar-drink promotions in summers past, with most markets opting to sell large sweet tea for a buck last year. But the franchisees say the fast-food chain is making a greater effort this year to get more markets—which have the final say on any offer—to sell all fountain drinks for $1.

McDonald's also wants the $1 drink promotions to run 150 days, starting after Memorial Day, up from 100 days in prior