I usually fly Qatar airways but the prices were too expensive so I went with Kuwait Airways. The good thing is when you book online a pop-up message tells you T4 terminal is where you need to go. Well, the airport was lackluster to say the least, it was very basic, it didn't have any welcome vibes. It' pretty much empty with one coffee shop coming soon, a couple of atm machines and that's about it. No exchanges, no restaurants just a small space with some couches. When you enter the departure area it's one big long line because they combine two or more flights and on this day half of the ticket agents were missing.
On the way back in the Qatar terminal Kuwait Airways only has a small space with four ticketing agents which makes for another long wait and even more chaos when people try to head up to the business/first class line when they are economy. The only good thing is when arriving there isn't much of a wait to get back into Kuwait, the passport control and security areas are quick.
I will only take KA if I can't find a cheap ticket, the wait is just horrible.