Compact body of Nikon P7800 makes it much easier to carry it with you all day. 7.1X Optical Zoom
7.1X Optical Zoom of Nikon P7800 will give you a lot of flexibility considering this will be your only camera during the day. RAW shooting capability
RAW files contains much more color information compared to JPEGs, and gives you more room for post processing without significant quality loss. They provide wider dynamic range and option to recover shadow and highlight clipping to some degree.
Carrying this weight all day may not be very comfortable for you. Body Thickness 50mm
With a thickness of 50mm,Nikon P7800 is not a pocketable camera for sure. Small 1/1.7 sensor
Nikon P7800's small sensor struggles in low light situations compared to larger sensor.