Honestly, I don't believe in renting. I think it's only second to piracy, since the publisher and devs get money for one copy, yet the company that puts it out for rent makes money from several consumers that had showed an interest in the game. That effectively steals potentially deserved income earned by the devs and the publisher. The whole basis of capitalism is that you work and get fully compensated for your work. I feel the same way about used games as well.
Because of all that, it wouldn't be morally right if I didn't at least urge you to either buy it from a retailer legitimately, or to wait and save up so you can buy it legitimately. The game is really good, and waiting a month or so to get the money needed to purchase an actual legitimate copy isn't going to make it degrade in quality. The Zelda team spent a lot of time and worked really hard on this title. Respect that by not handing profit off to companies that allow you to rent