命令形 => Imperative form N4
放題 => doing as one pleases; to one's heart's content; leaving uncontrolled N1
…のも無理 (は) ない => It's natural for... N3
Evaluate
[命令「めいれい」] => Do A (command) N4
Can, Should, Must
のも無理もない => (to be) natural,(to be) understandable N3
Evaluate