Are BT your provider ? , this isn’t an Openreach forum , so if you are using a different provider and not BT , this isn’t really the place for your question, but in general
Hoists can be arranged on the day if the reason for needing one wasn’t known until the installer turned up or can be arranged in advance if it’s known that a hoist will be needed, if an existing copper dropwire exists that can be used to cut and draw the new fibre cable through the trees following the same path the copper cable takes through the tree canopy , it’s not always necessary to cut branches back etc but hoist operators can do some pruning.
