Being a child of the 80s and 90s (and at this point, "child" is a term best used loosely), this is of interest to me. However, I find the "no rap, no hip-hop" emphasis a little disturbing, because:
1. It carries vaguely racial connotations.
2. It eliminates a lot of really good party music from that era. (Note that "really good" does not preclude "really cheesy")
Now, assuming that #1 is just an extention of that old saw, "I like every kind of music -- except rap and country" (and why do those two always get lumped together?), #2 is still really troubling, because this blanket prohibition leaves out such 80s & 90s party-rap favorites and proven dance floor fillers such as [artist names link to Wikipedia, song names point to YouTube]:
* Wreckx-N-Effect's Rumpshaker
* Anything by Rob Base (which, er, just means It Takes Two or Joy and Pain)
* Snap!, The Power
* Young MC, Bust a Move
* House of Pain, Jump Around
* Sir Mix-a-Lot's Baby Got Back
* Sugarhill Gang's Apache (which I've talked about before)
* C+C Music Factory's Gonna Make You Sweat (Everybody Dance Now)
* Vanilla Ice, Ice Ice Baby
* MARRS's Pump Up the Volume (which is technically house/dance, but still)
* Tag Team's Whoomp There It Is (I hate this song)
That's an even dozen songs right there. I'm sure you have your own additions.
I'd started percolating on this entry when I first heard the ad on the radio, but it gained additional relevance when I saw this item on Metafilter today: The Top 10 Rap Songs White People Love. There's a lot of crossover between the two lists (ooh, The Humpty Dance, good call. O.P.P. -- can't believe I missed that. Though Biz Markie... don't think so.)
Anyway, while I'm sure you could waffle by claiming that some of these are actually house or dance, I submit that no dance night can truly have the "best music of the 80s and 90s" with such a blanket prohibition in place and thus say, "Mr. Ned Devine's, tear down this wall!"