After all th weight, I find that I leave my BIG lens and Big Primes at home, Unless I KNOW I am having a Dedicated Photo Day. They my BIG Pelicans with Wheels come out.
I use my tamron 28-300 XR and it works great for parties, and Spur of the moment shots

(oh I also pack my 17-35 wide just in case)
All fits in a light shoulder bag and I just go out and have FUN.