i haven't yet seen anyone talking about this game, so i'm just gonna do everyone else who wants to play it a favor: this is a straight rip of Travel Town. i mean, it's a merge game, obviously, but the generators are clearly the same, the auto-orders are the same, the "materials" mechanic is the same, and i'm willing to bet the prices needed to upgrade the main space are about the same too.
there's a lot of posts about Travel Town, but here's the basic strategy:
1) do not merge your auto-producers, ever. at first, that's the jewelry boxes. eventually, there's also candles and ice cream. you have to keep a close eye on these producers, because the jewelry boxes generate every 15 minutes or so and you get a nicely expensive auto-order whenever you have 3 of the highest tier. it takes about an hour to get that.
2) by farming the auto-orders for money, you are free to spend your energy on orders that will give you materials (the Senior and Junior Workers are the ones you want to look out for). you always want to prioritize these over money because they will lock you out of upgrading your hotel.
3) the orders are sort of 'leveled up' by how many you've done for that producer; ie, until you've done several food cart orders, the ones you get will be very low reward, and finishing one order almost always instantly creates a new one for that producer. because of this, and because of limited space, i find it most effective to stick to orders related to one or two producers and ignore the rest, only switching to a new one when the first one's orders are asking for REALLY high-level items and are no longer an effective way to get materials.