Can one drink a coffee, or a water bottle outside, or is that also considered like eating on the streets?
It is permitted to drink something outside.
This is not considered as eating on the street, because it is not “uncouth” to drink something on the street (for instance, sipping water from a bottle or a similar idea).
Although the Minchas Shlomo (no. 18) cites from the Moznayim La-Mishpat (9) that the custom for a Mesader Kiddushin not to drink from the cup of wine is on account of this being “drinking in public,” it remains clear that in general drinking will not carry the problem of eating in public.