Is alcohol completely prohibited with Quvivic?

There is a moderate interaction with alcohol, moderate meaning:

Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.

Moderate
Alcohol (Ethanol) daridorexant
Moderate Drug Interaction

Using daridorexant together with ethanol may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people may also experience impairment in thinking, judgment, and motor coordination. You should avoid or limit the use of alcohol while being treated with daridorexant. Do not use more than the recommended dose of daridorexant, and avoid driving, operating machinery, or engaging in potentially hazardous activities requiring mental alertness and motor coordination until you know how the medication affects you. Talk to your doctor if you have any questions or concerns. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Interaction report:
https://www.drugs.com/food-interactions/daridorexant,quviviq.html

"What should I avoid while taking Quviviq?
Do not drink alcohol while taking Quviviq. It can increase the effects of alcohol, which can be dangerous.
You may still feel drowsy the next day after taking Quviviq.
Do not drive, operate heavy machinery, do anything dangerous, or do other activities that require clear thinking if you have taken Quviviq as prescribed but do not feel fully awake, you have taken Quviviq and have less than a full night of sleep (at least 7 hours), or if you have taken more Quviviq than prescribed by your health care provider."

Source: https://www.drugs.com/quviviq.html

Do ask your Dr., for his/her advice.