A café or restaurant is like an orchestra. If you have ever seen and heard one in full and perfect performance, it is a joy. However, if the guy with the triangle, or the lady on the flute, or the dude on the bass makes their entrance a split second too early or late, chaos ensues. The conductor will get into an almighty stropp and the aural experience of the audience will slide from sublime to grating. Thus, getting every single tiny element right down to the last lingering note on the ear or the last taste on the tongue or last expression on the face matters a lot.
So, before opening your café, visit your nearest concert hall and watch as the orchestra troop in, section by section, check out the instruments , read their instructions, warm up and, listen. Watch how everyone is in the right place with the right inanimate instrument which they know how to cajole into a thing of beauty. Watch then the conductor who is the last to arrive on stage. I have observed conductors at a number of concerts and I wondered if any of the orchestra ever feel that this guy/gal gets too much attention. After all, s/he just waves that stick around and depending on the style, jumps, wiggles and shakes along with the music created by the orchestra, who are after all actually playing the instruments.
But, like a good manager in a business, the conductor brings all those disparate elements together and makes it into a fabulous sound and experience. To get back to opening your café, the same principles apply. Knowing the business, learning the trade, practicing, practicing and then bringing it all together with strong management.