Rangers rested some players becuse the game was being played on plastic.
Afterwards Waddock told the official website
"It was meant to be a grass surface, so we've had to change the team accordingly.
"I've got players in positions they aren't used to - Alan McDonald and Tony Roberts had to play in the end to make up the numbers.
"So although we got beat, there are reasons for that and this game wasn't taken too seriously at all.
"Sorrento won their league last year and it was an exhibition match and a celebration for them.
"The most important thing was that we didn't pick up any injuries and we didn't lose three points.
"I didn't want to play Cook or Rowlands, but one or two of the lads were feeling the heat a bit.
"We'll need every single player against Burnley, not a game against Sorrento.
"We don't play on this sort of surface during the year - the scoreline doesn't bother me at all."
Sorrento: Ambra, Ferrara, Pezzella, Marciano, Ferraro, Iorio, Ingenito, Ottobre, Ripa, Russo, Maiorano
Subs: Rastelli, Solimene
Rangers: Cole, Bailey, Armel, Fortune (Roberts), Howell, Ward (Rowlands), Baidoo, Pinto (McDonald), Donnelly, R Jones, Czerkas (Cook).
Click here for a full match report.