Family Trip Ideas?

your 16 year old will be bored to tears .nothing for them to do

Take him to Spearmint Rhino, should cheer him up. Vegas is definitely for 21+.

I don't know fake mustache or some gray hairspray. It was really just a  joke.

Vegas ain't Disney and even though there are video arcades and some
other things left over from the great failed experiment to make SinCity
family friendly most of the teenagers wander the strip or Fremont or
worst try to ambush me when I take a piss break and get me to make
some parley bet for him.

You guys aren't doing anything to help coolguy13.  Here is a list of things to see/do that the whole family can enjoy:

1)  The Mirage:  Dolphins, White Tigers, White Lions, and other animals
https://www.mirage.com/attractions/attractions_dolphins.aspx
https://www.mirage.com/attractions/attractions_white_tigers.aspx

2) The Mirage:  The Volcano (free and outside on the strip)

3) Mandalay Bay:  Shark Reef
https://www.mandalaybay.com/entertainment/sharkreef.aspx

4) Stratosphere:  Observation Deck (awesome view of the strip)
https://www.stratospherehotel.com/observation_deck.html

5) Bellagio:  Water Show (free and can be viewed on sidewalk along the strip)
https://www.bellagio.com/amenities/fountains-of-bellagio.aspx

6) Bellagio:  Botanical Garden (free, changes seasonally)

7) Excalibur:  Tournament of Kings Dinner Show
https://www.excalibur.com/entertainment/tournament_of_kings.aspx

8) M&M World (on the strip near MGM)
https://www.mymms.com/merchandise/las_vegas.asp

Restaurants the whole family can enjoy:

1) Cheesecake Factory (inside the Forum Shops at Caesar's Palace
2) Maggiano's (at the Fashion Show Mall)
3) Grand Lux Cafe (inside the Venetian)