Remember when you could see The Stardust from The Frontier?
59 days left to visit The Frontier. It's not a great place compared to the new stuff. Doesn't matter. Go there. Visit for one hour. Check out the Sigma Derby relic. Take photographs. Then go on about your weekend visiting the much more cool and current spots. By doing it like this, you will not regret the inability to go back in time and see what it was like.
Have you seen the movie Bachelor Party Vegas? At the beginning they present a fast trip on The Strip. You can see The Frontier, and across the street, a Standard gas station, where Wynn now stands.
It was a different place then, and The Frontier is a relic. If you come to Las Vegas while The Frontier is still open (less than 2 months left) you really must visit, if only for a walk through and few photos.