Bistro is an upscale, mainly adult dining environment. Every meal I've had here has been quiet, relaxing and with perfectly prepared food. The tables are fairly close together but due to the atmosphere, I've never experienced a noisy meal. I have not dined here my last two trips and I've read on here that they now allow children to order from the Chefs menu downstairs so I don't know if it's gotten to be less of upscale feel or not. Every time we have dined here, it's been mainly couples only.
Yes, I think the food is much better at Bistro, enough to justify the cost.