If you are going to be in the San Francisco area on Wednesday, April 29, you may want to head to the Microsoft Store located in the Westfield San Francisco Centre. The company will be holding an after-hours event at that store on Wednesday evening.
While the special event is located and timed for people who are attending Microsoft's Build 2015 developer conference, anyone can come by the Microsoft Store to join the festivities, which will include "food, live music, prizes and more". One thing that will happen during the event is a live playable PC tournament featuring Ubisoft's upcoming tactical shooter Rainbow Six Siege. Also, anyone who gets in will be able to purchase a 12-month subscription to Xbox Live Gold for $20 off its usual price.
Lines for the event will open at 9 pm, and only the first 150 people in line will be able to attend the after-hours party, which will last from 10 pm to midnight at the store.
Source: Major Nelson