LiquidLife
Fish Fanatic
We have bettas at work and they always get left unattended over the weekend (although there are people there at work, we don't ask them to do fish). Just make sure the bowl has been given a 100% water change on Friday and that he has been eating regularly all week. DON'T FEED HIM EXTRA ON FRIDAY. He'll be just fine. Make sure (as others have pointed out) that his water will stay a constant temp (as close to 75-80 degrees F if possible, definitely not below 70), out of direct sunlight and out of any drafts (air conditioning ducts). He'll be just fine.