Chalk it up to a bad experience. I agree, the queue could be cooler in temperature so I do hope they hear that criticism. Otherwise, there are thousands of people having a great experience riding it everyday. So yes it is open, no the issues aren't catastrophic (although they were for your family), and yes you should try riding it again, keeping in mind a brand new ride of this nature could experience technical difficulties. (See: Gringotts, Mine Train, Test Track, Rockit..)