The minimal services are essentially transportation, government documentation, and disposition (cremation, burial, entombment, etc). Some funeral homes won’t charge for a private viewing by immediate family, some charge a small fee. Typically there’s a cap on number of people and amount of time, something like 10 people total for 30 minutes.

Anything more than that will require you pay thousands of dollars extra. Hours of receiving guests, a published obituary, a mass or ceremony, musicians, clergy/celebrants, reception. All of those are pushed as “traditional” or expected but they’re incredibly expensive.