We are planning a day trip over to Hilo from the Four Seasons in Kailua-Kona. The trip via 19 includes Akaka Falls, the Botanical Gardens, Hilo, Rainbow Falls, with the last stop via Saddle Road at the Mauna Kea Observatory. We plan on leaving early as we will still be on EST, so we will be in Hilo around noon. We were told by the Four Seasons concierge not to take Saddle Road as it was under construction and not safe for travel. This is our first trip to the Big Island and we have 5 days here before we move on to Kauai and Maui. Can anyone please clarify if Saddle Road is safe in the evening to drive or is it just a precaution because of the renting car.