Unless mx defers the apu during the summer, gear pinned down, pack deferrals and all the other big ticket items that were previously "ops checked good" it's thanks for flying big D
I avoid using the mainline partners name at all costs. Pretending to be the mainline carrier only helps blur the line between mainline and the regional industry. Mainline wants to give a seamless transition to their passengers but we do not do any favors by pretending to be mainline to the pax, this includes those who wear lanyards with the mainline name on it.