First question: can the space take a giant?
A Flemish Giant is not a scaled-up pet rabbit; it is a very large, heavy animal that needs genuine floor space to stretch, turn and lie fully out, solid flooring that will not cut or pressure feet under that weight, and fencing or a room setup that a strong rabbit cannot push aside. Before a first night, visit the boarder yourself and look at where your giant will actually live: measure with your eyes whether the rabbit can take several hops and flop fully extended, confirm there is no wire-mesh floor, and check the area is escape-proof and free of cables and hazards at rabbit height.
Also agree the handling plan. A Flemish Giant should be lifted rarely, always with full support of the hindquarters and chest, and ideally encouraged to walk into a large, sturdy carrier rather than being carried across a room. A boarder who is nervous of the size is not the right boarder for this breed.
Pack for continuity, in giant quantities
Send the exact hay your giant eats, and plenty of it — a large rabbit consumes a volume that surprises boarders used to dwarf breeds, and running out or swapping hay abruptly risks gut trouble. Pack usual greens and pellets for the stay, its own heavy bowls that cannot be tipped, and bedding or a fleece carrying home scent. Include favourite chew items so the first night includes familiar occupation.
Write the routine down: feeding times and amounts, hay top-up expectations, daily out-of-pen exercise on a safe surface, litter arrangements, and the normal signs that this particular giant is relaxed — plus your vet's contact details, your own contact details, and permission arrangements for emergency care.
Rehearse the separation
If the boarder allows it, make a short introductory visit with your Flemish Giant before the real night, letting the rabbit explore the boarding space, meet the person and return home. Rabbits who have already mapped a place and a smell settle markedly faster when they return to it. At home, practise calm carrier entry with treats in the days before, so departure morning is not the first wrestling match with a large reluctant rabbit.
On the day, keep your own routine normal, load hay and gear first, and leave promptly and calmly once your giant is settled in the boarding pen with hay in front of it.
Hand the routine over properly
A doorstep summary is not enough for a giant breed with giant appetites and specific handling needs. Give your boarder the full written routine in advance, confirm they have read the exercise, flooring and lifting points, and agree how often you want updates during the stay.
KinsLe Care Pass lets you hand that trusted boarder temporary, clear access to your Flemish Giant's routine and key details, so the first night away runs on your instructions rather than guesswork.