Getting a spray tan after breast augmentation: Should I cover the incisions with bandages or medical tape to be safe?

I had my breast augmentation surgery 22 days ago. I have an event this weekend that I would like to get a spray tan for. It would be 3.5 weeks/ almost 4 weeks after when surgery when I would get it. My incisions look fully closed and just like small pink lines.. Is it okay to get a spray tan or does this put me at risk for an infection?