Why does a flight booking mention that the plane has wingtips? Often when booking flights the plane is listed as having wingtips.  For example, it would say 737 (wingtips).  I get what the wingtips are for, but what is the purpose of telling the passengers that the plane has them at time of booking?
This is nothing but a silly marketing exercise. Wingtips (or rather winglets: all airplanes have wingtips:) are seen by the public as a cool and very visible feature, characteristic of newer models. So perhaps they want to say that our airplane is new, and not the 1968 model with the same designation.