'Atithi Tum Kab Jaoge' is a fun entertainer, nothing earth shattering of course; but still definitely worth watching. The jokes are generally clean and the film can be enjoyed by the entire family.
The premise is slightly hackneyed, and not all the jokes hit their mark. For instance, the sequence at the hotel with the police raid is rather unoriginal. Still, the actors give their best and their comic timing makes a decent script fun.
Paresh Rawal is a big reason for the film's success. He manages to milk every situation for laughs. Konkana is fine, but the role doesn't give her as much scope as her indie films. Devgan is alright. At two hours the film's length is just about right and it manages not to overstay its welcome!
Overall: watchable entertainer
7 / 10