Party in Tokyo

My girl friends and I (25 yrs of age) will be in Tokyo fr Oct 30-Nov 2, Halloween season.

1. Where is the best street party to celebrate Halloween?
2. Any tips and tricks to to save on alcohol? I heard a beer could cost up to 800yen?
3. Would it be better to buy a bottle of alcohol in a convenience store?
4. How much would a liter of tequila cost in the convenience store?

Yes, we don't want to feel thirsty. :))

Thank you!

Unfortunately, there is a big parade in Harajuku and Roppongi and Kawasaki, but is carried out in the 26th and October 25th.

1. Where is the best street party to celebrate Halloween?

Japan doesn't have a big Halloween party atmosphere. Best to look at the events held at local bars and clubs. Here's a article from last year:

http://www.timeout.jp/en/tokyo/feature/8073/Celebrate-Halloween

2. Any tips and tricks to to save on alcohol? I heard a beer could cost up to 800yen?

Pregame early. Once you are in the club/bar the drinks get expensive.

3. Would it be better to buy a bottle of alcohol in a convenience store?

Generally you can't bring it in.

4. How much would a liter of tequila cost in the convenience store?

They don't usually sell tequila in the convenience stores in Japan.

Buy your alcohol in a Supermarket and drink it before going into a club (or you can try to sneak it). It usually is much cheaper than in convenience stores and the selection is much bigger, you'll also find cold beer in the supermarket, if that is what bothers you.

Thank you everyone!! Much appreciated. :-)