Pros
It's a part time minwage job. You get part time minwage pay. The more shifts you work, the more money you earn. Easy math. You won't be laughing your way to the bank, but you'll be compensated for your time as much as is legal.
Cons
The shop I worked in was cold, soulless, and corporate. Everyone looked, felt, and was treated exclusively like a cog in an assembly line, with strict instructions to stay at your post and only do what you were told. No humanity, no flexibility, just marching orders and micromanagement. No one really talked to one another. Everyone was a robot. It doesn't have to be this way. At the previous boba chain I worked for, the culture was relaxed and personable while still being professional and effective. Small teams of four to five people - even two or three, though this wasn't ideal - could run a store by themselves, handle rushes and difficult customers, juggle in-store and mobile orders, restock and clean, and still be comfortable being real people. We didn't always do things "by the book" because we didn't need to. We found what worked for our store based on the skills and energy each of us brought there each day, and we trusted each other. Camaraderie improves team efficiency and cohesion. Don't foster an environment where employees feel like pieces of equipment. Trust me, your store won't burn down if you loosen the reins a little bit.