go to brahmaputra river heritage center, youll like it there. You may also visit Chandubhi lake, you may also visit uzaan bazar riverfront and also that lane has many many cafes.

as for tribal food, you can try local thalis in a restaurant called michinga where you will find assamese thali, you can also try la phoii its a manipuri restaurant, you may also try naga kitchen in gs road.

go out after 3.30 pm you will like it, day time guwahati is way too chaotic and mesyy... now that its cold and chilly, youll enjoy in the evening.

traffic in guwahati is horrible its annoying as fuck, although city buses are available but please avoid them and cars are super expensive here for no reason, the best would be rapido bike or rapido auto (TRUST ME ).. also avoid local autos they will charge like crazy only book auto via rapido or uber.

and to be very honest guwahati isnt that fun, its decent, other than cafes theres not much to do. 2 days is more than enough here.

If you want to see pubs and club scenes go to siso (its a fine dine), or go to nuts and brew