Just I need everyone knows what's the situation in Ramadan,the Muslims stop eating & drinking to have the same feeling of the poor people who don't have anything to eat that's why after Ramadan all single muslim must pay for charity for poor people to make them happy.
About yr question only in the noon time the resturant will be close but in sunset time all the resturants will be open,all the grocery & supermarket are open in the noon time.Some hotels serve the meals in the noon time but they cover the place with partition or something to respect the fasting people.Last year I was with my friend she got her breakfast in Ramada hotel in the ground floor.You can say that all the hotels serve all the meals in Ramadan .. Also you can try "Khaima" the tent in the all the hotels it's nice with the music & the delecius food.

Also ,you can try oneday to fast as I did with my friends last year & muslims & non muslims from Doha Asian Games & we got our break fast in the sunset time in the garden in the corniche..

Doha is a free city you can do what u like to doh but just respect the others.

I'm coming from the lost Paradise