Baby bassinet as long as no more than 13kg, its very useful as I rememeber while my baby was 11 months old, he slept tho the whole jounry 11 hours. Pretty good!
Infant ticket do NOT guarantee the bulk head seat nor a baby bassinet. There is only a few seats which can accommodate a baby bassinet , if they are all gone, you will be assign any seat and need to hand held your baby as infant do not have a seat. Alternatively, you can always buy a child ticket for your infant so that you can have more space.