Drinking water from bottles

Q: We learnt that one should not drink water from a jug or bottle. Please advise regarding drinking from water bottles (the ones purchased from shops in 350ml / 500ml), juice bottles (children's school lunch bottles), flasks etc. that we find students are commonly using today. These come in various kinds of styles and sizes - some even going upto 1 and 2 litre bottles.

Singing and dancing on the occasion of nikaah

Q: In 2-3 months I'm getting married. We are Pakistanis so in our culture before the wedding day we do an event called Dholki where people get together and sing and dance. I'm trying to avoid doing haram things. 

Is it possible to use drums at the event? Is it only duff that is permissible? The event will be a female only event. Can we dance? At the nikaah event can we use music with only vocals and drums?