I'm assuming you're heading to the South Rim… is that correct? Look for accommodations in Tusayan – less expensive and more availability than inside the park. Does "we are light hikers" mean you would like to hike but nothing too strenuous, or does that really mean "we are looking for other activities"? The South Rim trail doesn't drop into the canyon very far at all – easy for light hikers and you can do as much or as little as you like. My last visit there I did a sunrise hike on the South Kaibab trail to Ooh Aah point and back. It will give you a nice taste of the canyon without too much effort or strain. You can then explore other vistas by car: Desert View, Grandview, Mather, Yavapai, Maricopa Hopi, Mojave, Pima Points and Hermit's Rest. If you want a more immersive experience and have a day to dedicate to it, you can do the 9-mile out and back hike on the Bright Angel trail to Indian Gardens. As long as you're in good physical condition, you can do it in 8 hours and there are water refill stations and restrooms at Indian Gardens and at the 1.5 and 3 mile points.
Jerry Hey Thanks so much for this great info...we can do the more immersive day...sounds great. Thanks again Matt