Some of the options you can try are Ardor 2.1, The GT Road in CP. There's Barbeque Company in Karkadooma, Cafe Knosh at The Leela Ambience Convention Hotel
Okay so I'm gonna tell you a few places
BBQ nation does a buffet system.
Also you can checkout Jazz rooftop in Vasundhara
Plus cobrew cafe in Vasundhara can book the whole place for bday parties.
Woods cafe in mohan nagar is a really nice pace for bday parties they also do customised decoration for some extra cash so you can these places out as they are near you.
I hope it helps.
Dwnloadn hopscotch. .new brand dress for kids ......u can find in H&M branded shwroom
Mother care store in malls....just try it
First cry ....try it
In east delhi u can try bbq company and tesoro mio..