What is a GTG? Variation on another post
Got To Go
Get Together
Good To Go
Golden Tee Golf (game)
Gray to Gray (LCD response timing)
Game Tying Goals (hockey)
Gas Turbine Generator
Glory to God
Get the Girl
Global Tone Generation
Gaussian-Type Geminal
Global Travel
Group
Go To Guy/Gal
Graphics to Go
Growth Type Group (forestry)

A get-together, I believe.

correct

Several GTGs being planning all over the US over on the US board.

In the morning - got to go

In the evening - get together

Going To Geneva !! (Or is it Gatwick ? )

And at Happy Hour - Go for The Gusto