First welcome, I see this is your first post. Yes two people no problem.... I assume you are talking about a studio. Some of the Two bedrooms have an extra long balcony, more than twice as long, but the width is the same as the studios. In any case, with a studio balcony, three people and it starts to get crowded quick.
WDW:
76,77,78,87,FW
92,Offsite
95 POL
96(2), GF,Offsite
97,GF
98,99,00,FW
8/00 DVC member @ BWV
3/01 BWV, FW
3/01 DVC member @ WLV
11/01 BWV !
Actually, if you have a preferred studio, the balcony is huge. You could have a party out there. Still only two (cheap) chairs and a small plastic table, though.