Instinct Solar 2X up to 8 hours in a row?

Hi, I have a question. Soon I'll go on the annual walk around my city, cca. 32,5 km. With some pauses probably 7 and half hours. From today's perspective it is estimated that it will be around 20-22 degrees Celsius and at the start sunny, later a litte cloudy. My watch is Garmin Instinct 2X Solar. Lightness on the screen is set on 5%. GPS and heart beat rate will be turned on and I'll have turned on all the navigation systems and default GPS mode. I will monitoring the trip via 'walking' activity. Can I expect that the watch will make it without battery  drain out?