Sept 21 this year was the first "official" day of Holloween Time.... So it was all up. It takes a bit of time to get everthing up so there was stuff from right after labor day if you happened to be there...
Just like this weekend, there were a bunch of Christmas displays up, but Christmas time hasn't "officially started" yet.
As for the original question, I used to be very against "gay days" of any sort, not because I am against gays, but simply because I didn't see the need, they don't hold "straight" days etc...
But after talking to a gay person one time, he convinced me of the reason and rational behind it, and I changed my thoughts.
Also, I think most folks perception of anything "gay day" related is the outlandish stuff you see in some of the parades on TV, this to my understanding is not the case at DL, because, well, it is DL after all.
And I agree with the rest, if your offended or uncomfortable, then just pick a different weekend.... then there are no worries.