Sure. Being close to a Lagrange point doesn't mean you need _zero_ fuel, just a small amount. There's still the influence of the solar wind -- station keeping i

Sure. Being close to a Lagrange point doesn't mean you need _zero_ fuel, just a small amount. There's still the influence of the solar wind -- station keeping is inevitably necessary. As a result it doesn't really matter if a spacecraft is exactly at the Lagrange point or 100 km away from it, so there's no shortage of space. Also, this might be obvious, but it usually wouldn't make sense to park a spacecraft exactly at a Lagrange point because the spacecraft had to be moving in the first place in order to reach the Lagrange point. It would be a waste of fuel to slow down, so an orbit would typically be used instead.