My friends and I went to Athens last October. My flights were booked through United with plane change in Toronto to Air Canada Rouge. It was the worst flight I have ever been on. The overhead seat lights did not work. Some came on later, other passengers were given battery book lights. If you wanted to watch a movie you had to rent an ipad. (No seat back entertainment screens) There were no free alcohol drinks (not a biggie for me, but every other international flight I have been on offered them). The overhead bin would not hold the new luggage I bought matching the Air Canada sizing requirements. (Luckily the plane was not full and I was able to put it in sideways.) The flight attendants were not answering call buttons. They also did not collect trays after the meal. Passengers stacked their dirty dishes and trash on tray tables at unoccupied seats. The trash remained until preparation for landing. As someone pointed out to me this could have been dangerous if there had been turbulence.
This was booked through United, and I had no idea that this was a minimal or budget service airline. The fare was not cheaper. My roundtrip ticket returned me to states via a United plane and the difference was amazing. I did complain to United and received a small credit towards a future ticket. I will never travel Air Canada Rouge again.