Tokyo beer gardens and festivals

[Robb S]

So has anyone heard of any interesting-sounding beer gardens this summer? Tokyo Time Out lists a number of places, although they have a rather broad definition of beer garden.

http://www.timeout.jp/en/tokyo/feature/3771/Alternative-beer-gardens
http://www.timeout.jp/en/tokyo/feature/3772/Alternative-beer-gardens
http://www.timeout.jp/en/tokyo/feature/3773/Alternative-beer-gardens

Also there are a number of Oktoberfest parties coming up in Tokyo - Yoyogi Park in July, Shiba-Koen in August and Toyosu in September:

http://www.oktober-fest.jp/index.html

[Robb S]

I passed the Forest Beer Garden in Shinanomachi the other night and the aroma of grilled lamb was quite enticing! Grilled lamb is the specialty there, with a platter of three different cuts of lamb and vegetables (enough for 3-4 people) for Y3780. There's also a mixed BBQ nomihodai tabehodai deal for Y4000/Y3800 per man/woman, and plenty of a la carte options.

The beer garden is located just inside the park next to Shinanomachi station, and it has seating for 1,000 people. It's open nightly from 5-10pm (LO 9pm) until September 24, 2011.

[Uncle Yabai]

I can vouch for the Sekirei. It is truly a nice place to have a cold one.

[Ninisix]

The formula on a night cruise at 2500.-yens, along with some beer, was fun !!! And girls were dancing in yukatas!! It was a great party (I enjoyed that 2 years ago) : 
http://www.tokaikisen.jp/news/no2011-eng.pdf
http://chowhound.chow.com/topics/643357
On the other hand, the variety and range of beers put on some piquant charm, so this week, I have decided to try, for the first time, Lions Ginza 7-Chome beer garden. But I have been hit by the price, especially, I couldn't understand the 6 sausages set at 2280yens !