Pros
Every day is different and presents a unique challenge to solve. Your direct output and decisions will have a significant effect on the business and company. You get to hand-build a company from scratch. You get to think for yourself, outside the box, to solve problems/create unique opportunities. You are giving the ability to order anything to the masses - that is truly empowering and disruptive. You are working alongside people who share the same mentality and are as passionate as you.
Cons
Work/Life balance can be out of sync - but you are joining an early stage, high-growth company - this is to be expected. Be prepared to work hard! If you are starting out in a new market solo, the company culture can seem distant, however this is the opportunity to create an extension of it in the market you are in!