Caporegime
You don't need to bench massively, but you do need accessible weight.
I guess it depends on what machines the place has and what type of weights it uses.
I've not been to many gyms where there is an abundance of 1" standard weight plates tbh.
When I was training before Christmas at home, I dont use an Oly bar, but I have enough weight for myself...
An oly bar just increases the weight due to the weight of the oly bar itself
Unless you're on about something different entirely