For road trippers, maybe an extra $1 convenience charge for using a CC, while signing up for the app waives that charge would work. For those on a once in a wh

For road trippers, maybe an extra $1 convenience charge for using a CC, while signing up for the app waives that charge would work. For those on a once in a while trip, they can eat the several dollars in convenience fees, while those that travel regularly can get their app of choice. It's also not fun to leave some dollars hostage on some app as a credit when you may use them months or years later.