On my most recent stay, 1/20-1/27/18, I did not tip everyday. It was a DVC stay, and we only tipped on the day of checkout. The reason I do not tip everyday is that I do not want housekeeping everyday, despite the new policy. I tip on the last day because the entire mess that they are cleaning is mine. Yes, I realize they would have to clean the room for the next guest anyhow, but it is my way of saying thanks for cleaning the mess I have left behind.
I have looked up the contract between the union and Disney, and housekeeper make between a $10-$14/hr, and are, as stated in earlier posts, considered non-tipped positions. However, housekeepers at Marriott, a chain that actively encourages tipping their housekeepers, also starts at $10/hr. So even though their wages may be union negotiated it is not really ahead of the rest of the industry, and $20,000-$29,000 a year is not a lot for this largely thankless line of work. For what it is worth, the American Hotel and Lodging Association suggests a tip of $1-$5 a day.