Well the best I can explin it to you here is yea they get paid , but most coampnys are private . Reasons they sit in the special - anchorages , or staging areas are many and could be anything from a tanker delay to a refinery problem and too much for me to get into.
Picture it like this the more fuel they burn the more it costs them , just like us , the oil demmand is higher this time of year ,the tugs co.'s do not set the oil price.