One of the first question faced by most of us when we want to make a large batch is... Where will I get the bottles.
The easiest way is to ask your friends and family to save some. But personally I find it much easier to just walk into a bar during the day (monday noon works well) and ask them politely for some. Most bars are happy to get rid of the empty glassware which is lying in one corner of their dumpster. They will even give you some cartons to pack and carry them.
Getting quality wine bottles (dimple bottom and straight long neck) is slightly difficult. Hence visiting high end bars and restaurants helps, but most indian wines are bottled in screw cap bottles. Hence the supply is really limited, but it never harms to ask.