Hopefully riding it this year with two of my sons. We rode it last in 2021. Bit of a faff but heres how i dealt with return journey for us three. Weekend before the DD cycle to Walthamstow from north herts and leave my bike at my sons place. Train home. Saturday morning of ride day drive to Halesworth, train back to Walthamstow. Ride the DD that eveningand Sunday morning, cycle to Halesworth about 10 miles, remove all wheels from the 3 bikes, dtive back to north herts. My boys then stay for Sunday dinner then get train to London.
When ive solo ridden the DD, ( with 2000 others), i usually cycle back and not bother planning a specific route, just head west until around Lavenham, then i know route like back of my hand.
IMO, well worth doing this ride simply as its so rare to cycle through the night.