This is one of the BEST attractions in Las Vegas free or not! So, you can watch this free water and fountain show in front of the Bellagio from any angle. If you are staying in the hotel, pay for the upgrade to be on the fountain side. It's worth it. There is a fountain's music channel so you can watch the fountains with the music from the TV.
If you are not staying at the hotel, you can stand in front or on the sides of the fountains. There is no bad angle! If you haven't seen it, the fountains are an 9 acre lake with choreographed multi-directional fountains. The show takes place every 30 minutes in the afternoons and early evenings, and every 15 minutes from 8 PM to midnight. The final show at midnight is God Bless the USA.
The show is amazing and there is a new song each time (with a play list of songs that alternates throughout the day). My favorites are 'Singing in the Rain' and 'One from a Chorus Line'.
If you aren't staying at the Bellagio, then it can be a long walk to the front of the hotel. I found it easiest to valet park at Ballys hotel across the street and then take the bridge over the strip. Then you have a short walk to the front of the hotel for the best view (central location for those of us who need to be in the middle).
This is a MUST SEE! Don't miss it!