24.0X Optical Zoom 24.0X Optical Zoom of Nikon P90 will give you a lot of flexibility considering this will be your only camera during the day.
Medium size Body With relatively smaller body compared to DSLRs and better ergonomics compared to Compacts,Nikon P90is a good compromise between size and functionality.
400g Carrying this weight all day may not be very comfortable for you.
Body Thickness 99mm With a thickness of 99mm,Nikon P90 is not a pocketable camera for sure.
Small 1/2.33" (6.08 x 4.56 mm) sensor Nikon P90's small sensor struggles in low light situations compared to larger sensor.
No 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.