White wedding, reminds me of a particular piece of advice.
Some requests are nearly always asked for at certain types of function. Sometimes because people want to be "cliché" eg: "white Wedding" at a wedding, or "It might as well rain until September" at an August wedding where everyone prayed for nice weather, but everyone got drenched, or simply "hot, hot, hot" or "Disco Inferno" at a Fire Stations Disco.
Other requests are the "Poking fun at..." or "In Joke" requests, such as "Like a Virgin" for the bride, or "my old mans a dustman" for the grooms father who makes thousands every year as head of a recycling plant...etc...
Such requests may be better MENTIONED rather than PLAYED.
Take, for example: "Like a virgin". Its not especially great to dance to, however the girl (normally best shopping friend of the Bride, of course) who requested it, makes sure that you're aware of how "close" The Bride & her are.
You can either announce the song as normal, and play it all the way through, spending 4.5 minutes on a single "joke". or do something like...
"Oh Tracy (Bride), your close friend Sharon has suggested to us that "Like a Virgin" would be a great theme tune for you.... (pause for the giggles and/or semi-visious handbag twirling) however, its not all that easy to dance to, so we're gonna move straight onto this..." ..and play someone elses "SENSIBLE" requests.
Sharons happy coz Tracy blushed and called her a "birch" (

Did I mis-hear, or is tree-calling a nasty put-down?), Tracy's happy coz you've added a memory to the evening, and the audience is happy, coz you've saved them from 4.5 minutes of "plodder" and moved onto one of their requests instead.
Most gigs are limited on time, weddings especially. You cant afford to spend a twelvth of an hours (a 36th of the receptions/nights) tune time, getting a "one-liner" joke in.