So mid April I will be traveling to vegas for my fourth trip. On our second trip we went to Fremont street experience for a few hours and enjoyed it although the visit was short (felt like 2 hours) only bad part about the first trip was that it took us forever to get there with the bus. Stayed south strip and so many stops. Staying south strip again this year. Been going back and forth as to whether we should do a half day trip to the dam or go to Fremont for a longer visit. I'm an engineer so the dam seems interesting but also think visiting old vegas would be an enjoyable time. Any thoughts?