Luggage transfer to airport or bus?

What would be the easiest thing to do: luggage transfer or take a bus from dotonbori to the airport?

For context, this is going to be my first time in Japan (Jan 2026) and my flight is at 11pm and my check out from the hotel is 10am. My current plan is to stay around dotonbori area till 7pm after checking out to catch a train to KIX from wherever I end up in.

I've heard that the luggage transfers offer same day delivery from airports to hotels but I don't know if I need to send my luggage 2 days in advanced going home. The bus seems like it would be easier but having to carry luggage around till 7pm seems like a pain.

Any suggestions please? Thanks