My friends and I went on the high roller during the day and it was very relaxing and the views of Las Vegas was awesome!
We were lucky to get our own pod and are able to roam around freely and laying down to enjoy the ride. The ride was approximately 30 mins long. I suggest to use the restroom before going on. Definitely do this ride, you won't regret it.
We actually got free tickets from the Linq Hotel. We had to at least have 10 credits to spin this slot machine where you could win a few different coupons. So I suggest get a rewards card from the hotel (it's free) play little and spin the daily machine.