Hi! My familiy is planning to visit Grand Prismatic Spring on our next visit to Yellowstone (mid July). We are planning first to walk around the boardwalk, and then drive to the next stop and walk the Fairy Falls Trail and climbing up the hill. We were told it's a short 15 minute walk on the trail and then a 4 minute easy climb up the hill on a social trail (second social trail because first trail is longer and steeper). Is this correct? We were also told that at some times of day the steam does not allow to view the spring at its best. At what time of day would you recommend us to visit this area? Thank you very much.