Is the Faema E61 espresso machine suitable for a busy bar/café

Yes it is, but this depends on various factors. The first thing is experience, seen this is a manual operated espresso machine it requires a lot more attention from the barista then a solenoid operated model. There you need to stop the brewing process manually. If you don’t have the experience you probably can’t hold up with the tempo which is required at such a bar. Then I would advice to go for the Faema E61 Jubilee, this is the solenoid operated version of the Faema E61 Legend espresso machine.