It depends:
WL / MK Resort Boat (Red Flag) - Yes
FW / MK Resort Boat (Green Flag) - Yes
FW / WL / CR Resort Boat (Blue Flag) - No
Poly / GF / MK Resort Boat (Gold Flag) - No (it ran sporadically between Poly and MK in July and early August but hasn’t lately, TBD if it starts with GF reopening next week)
Epcot Resort Friendship Boats - No