Most people visit for four to five hours. So it will be tight. You will have time for the big events and some of the fun out back. If you want to go on every ride, enjoy museums and have an old time photo, etc, you will run out of time. Our closing time varies: Here's a link to our calendar: http://clarksbears.com/detailsCalendar.php
It may be cutting it close to fully enjoying the park. Segway ride and water slide are not very long but you have to walk and maybe wait to go on. Also, the bumper boats and the other rides and museums you would need to alot time for. It may also be hotter in the afternoon. I would recommend the earlier the better.
Call and ask Clark's
Depends on the day of the week. Last bear show was at 3 and train ride at 3:30 the day we went. I think it depends on the season. Things were closing up around 4:30ish but this was early June.
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