You can leave the Subpod unattended for up to a maximum of three months while you are away on vacation.
To keep the worms happy and fed while you are away, a good plan is to buy a pumpkin (or use one that is starting to rot), cut it in half and lay the open sides face down on the top of the bedding of the Subpod.
Then add a generous layer of dry carbon, either shredded newspaper, coir (coconut husk), wood shavings, crushed dried leaves or dried (brown) grass clippings on top of the pumpkin.
Cover all of this with the worm blanket and go off on your trip. If you are often away during the year, it is a good idea to add a little crushed charcoal with each feed when you are at home with your worms.
You can get purchase horticultural charcoal at gardening shops(no lighter fluid soaked barbecue briquettes) and crush this and add a little with each feed, this will keep the worms protected from multiple stresses including periods of no feeding. Another word for this charcoal is biochar.