South America · Peruvian Sol (PEN)
Not deeply traditional but increasingly common in tourist-facing restaurants and tours, especially around Cusco and Lima.
Check the bill; appreciated where no service charge is included.
Round up the fare; no fixed percentage.
For porters; housekeeping tips are modest and optional.
Rounding up is common practice.
For a private guide, especially on multi-day treks.
A modest tip is appreciated but not required.