We stayed at DLH in Jan, March and June and NOT ONCE did the CM at the check-in go over this with us. Luckily, I had read about it here on the boards so we knew about it and made good use of it when we could drag ourselves out of bed. It was so worth doing to avoid the lines, we will never miss another EE day again!
I still can not figure out why the front desk CMs are reluctant to pass on this important information?? Once time, I did ask what the days were and then they told me but they did not volunteer the info first.
Also, once I forgot the white charge slip and believe me, they will not let you in without it!! Luckily that time we were in the Sierra Tower and I was able to run back and get it very quickly. The CM at the monorail said that so many people were trying to get in with old hotel keys, they had to change the system to the white slips only. She was very nice about it and just had my family stand to the side so we didn't have to wait in line again. From her initial reaction though, it must happen a lot with people who don't "really" have the darn charge slip.