How far would it be from where you are? 30mins? So long as you package the fish right, 30mins is nothing. People ship fish all over the country, often taking hours or a whole day. If you want to be sure, just keep the fish in a dark, insulated container.
Personally, my fish sleep when it's dark :lol: Just feed them when the lights are on, if you forget it's not a big deal. Fish can go for two weeks without food.
HTH