A café can function as a place to meet, work or spend time alone, but everyone uses the same limited seats and staff attention. Read the menu while waiting, then ask a focused question if a coffee description is unfamiliar. Baristas can offer better guidance when you describe the flavours or drink style you enjoy.
Laptop use deserves particular care. Check the shop's policy before settling in, keep belongings off spare seats, and recognise when a busy service calls for a shorter visit. Headphones do not make a loud video meeting unobtrusive. Move longer calls away from neighbouring customers, and avoid treating a small café as a private office.
Photographs should respect both other people and the drink. Ask before photographing staff or close-up scenes involving strangers, avoid intrusive flash, and return to enjoying the coffee once the picture is taken. Polite feedback can be specific without being confrontational: explain the issue and give staff a reasonable opportunity to respond.

The conversation
A good question can make a better brew.