Sending Submariner to Rolex or Local Shop for Servicing?

[nsguy]

Hey friends, my 2016 submariner recently started presenting issues with the power reserve. It often dies too soon (12 hours after 40+ full manual winds) even when I wear the watch in moderately-active scenarios. I have the original five-year warranty, but the shop said it could take Rolex 4-6 weeks to get it fixed. Because of that, I was thinking of taking it to a Rolex watch repair shop in San Francisco (https://www.yelp.com/biz/giovanni-pa...-san-francisco). They don’t do service repairs, but it it’s cheap enough, I figure I’ll pay and get it fixed in a shorter timeframe. I want to know if having this repair shop open/fix the watch will void or affect the normal five-year warranty? Thanks!