I didn’t know Guadalajara airport didn’t pay them. Once we needed a wheelchair reserved through United. At check in lady said we don’t have wheelchairs. Have to call…… After a while a wheelchair came but when we reserved one it wasn’t there. No fault of United I guess as they do not provide wheelchair service. It was what it was. A wheelchair showed up in about 20 minutes. Took my relative to the gate and left her there to fend on her own. I know how to push wheelchairs. Good thing. ☺️