Yes, most modules can be combined freely as long as they can share the same fulfilment method on that delivery day. The one hard exception is Real Time, which can't be mixed with any other module on the same delivery date — if Real Time items and any other module's items land on the same day, the cart can't be closed until you split them. Beyond that, each module's own order minimum (Meal Packs, Catering, or any other module the store has set one for) is still checked separately, module by module, even inside a mixed cart.