Jo Donghi said: "It's individuals like this who make it hard for everyone else in the future who wish to enjoy our beautiful beach with family."
Bill Costello said: "This sure is a disgrace. If the pavilion was hired, then they should be made to clean it all up, and even clear the sand off the road etc as part of the punishment!"
Whanganui's deputy mayor Jenny Duncan said as far as she knew mess like this didn't happen on a regular basis but it has horrified people.