Downtown Disney hotels are
Best Western, Courtyard By Marriot, Grosvenor, Hilton, Lake Buena Vista Hotel, Doubletree Guest Suites. I think there may be another one, but I can't seem to find it anywhere. These hotels are located near Downtown Disney. here is an entrance off of 192 to the street that these hotels are on. I know that they have guest relations windows, but I don't know if you can get luau tickets at their windows. You may try getting your tickets on the day you go to MK. Park @ TTC and walk (less than 5 minute walk) to the Polynesian front desk to pick up your tickets. You can then take the monorail or boat to the MK.