Taking a day away from regularly scheduled activities to go on a field trip could put workers or students in a bind to catch up during especially busy periods at the workplace or school.
Field trips cost money, even if admission to the actual destination may be free. There are costs associated with transportation, extra staff, lunch and other aspects of the trip that may put a burden on the school or business's finances.
Arranging suitable transportation that is both reliable and affordable may be an issue when dealing with larger groups.
Even the best-planned field trip can go awry due to inclement weather. Unpredicted snowfall or flash flooding rains can instantly put a damper on, if not cancel, a trip that had been in the works for months.
There are many unforeseen circumstances that could influence the effectiveness of taking a field trip. Illness or personal crisis may cause some members of the group to miss the trip. Construction zones may delay a tentative schedule due to traffic snarls. Maintenance issues may arise at the field trip destination and warrant a closure of the facility. These are just some examples on an infinite list of possible interruptions not accounted for when originally planning the field trip.