Yes, depending on your hardware solutions, your account can integrate with QuickBooks for easy accounting reconciliation.
The answer to this question depends on who’s asking. A Point-of-Sale (POS) system can be invaluable to certain types of merchants, and is a “must have” in certain retail/restaurant industries. However, many businesses will have little to no use for a POS, since they aren’t customer-facing or they don’t have fast-moving inventory levels. Every business has different needs, so it’s hard to make blanket statements about what you’ll want to invest in.