Just ask the concierge to ring a taxi for you. you can pre book it the night before, there are usually some taxis outside the hotels but just to be safe best to pre book it. Disney usually use Mears.
Speak to the consierge but I think at that time you may need to get a taxi. You are very close to DTD from POFQ and it won't cost you much. The buses start running just after 6 but not to DTD as far as I know. Those buses are for early ADRs
Disney resorts work exclusively with the Mears Taxi company, so you won't have to worry which one is the best. Your ride should be about $12-$15 with tip.
I would def pre book the night before with Mears so that you have it waiting for you instead of you having to wait for it to arrive in the morning. There are never taxi's just waiting outside POFQ or POR as they are only allowed in to pick up and drop off.