Would you prank your man or besties like that? I can feel the pain he suffered OMG
I'm not too keen on many pranks, especially when cruel or overly physical. A more benign & gentle practical joke can be OK.
Aside from giving this guy an emotional shock and apparently hurting him physically, a soaking mess must have been made on that mattress. Sparkling wine or Champagne can have a substantial sugar content, and would take a lot of work to remove from the mattress cover & padding. Otherwise an unpleasant odor problem could develop, ruining a costly investment.
No, not a nice prank in my opinion, and not something I would do to anyone.