Just booking flixbus for a trip, not exceptionally far but over 2 and a half hours. All seats are currently bookable. DS is 6'4 so don't want to pick the wrong seat but he also has a history of travel sickness (not for many years) so definitely not going for back row. It will mainly be motorway/dual carriageway.
Was thinking front row but not sure whether it's better behind driver or the other side. Don't want to be near the loo.