It was overnight courier. reached in the morning, before I woke up, lol. - so about 15 - 18 hours.
1 box - standard cardbox box size lined with thick poly. a poly box will do too - but the cardboard version works really well too.
1 heatpad use 2 if not sure, especially if the box is going to the SI where its colder than palmy.
5 small bags in one box. normally people use tall thin bags filled with air. about 8 fish on avg in each bag. double pack the bags.
Oh and label it fragile and live tropical fish a million times on the outside, lol.