I know the newbies to flying are all very excited to get any job at all, but seriously after a couple of sectors you'll understand how hard these conditions will be and satisfaction will wane very quickly. Overnight allowances are there for a reason, you need the money to ensure you are rested and fed well. It's not a bonus. And it's not as if you can take your own meals with you to have at the other end. Airline meals (no matter how "healthy") just aren't a replacement for real food. Do you want to be living on curry and rice for your entire career? I wouldn't.
And if you are vego or gluten intolerant watch out because they may not load enough of these special diet meals onboard.