i do noticed that girls are more reserved in opening themselves for you when ur with some guys,
especially when they also well built, probably comes of intimidating and you have to try harder to come of as a nice guy, therefore i think its good to go out alone but i think it takes more confidence to have yourself feel comfortable with it, you soon think people think about you dont have any friends.
in another country i wouldnt really bother going out alone since ur already suppose to be a stranger then.