To your first question, retail POS systems are MUCH more focused on inventory and serialized/barcode items.
As for Revel, it is completely cloud based. This is what both peaked my interest and made me hesitant about it when I saw it last year at the trade event. One of the managers said flat out they wouldn't give you the ability to run their servers internally (my first question!) (there was a monthly fee but it wasn't much), however he said that should something happen to the company, they give you the software so it continues to run. Don't know if any of that is true or is still the case, but that was the story last year...
I personally wasn't comfortable with relying on an internet connection completely based on WiFi (with no Ethernet) (although I guess you could get an iPad with 3G/LTE and use that) to run my businesses. (What if their server goes out?) But again, I was extremely impressed with their system when I saw it and it was by far the easier back office I have ever seen... Keep in mind this was almost a year ago. At the very least, give them a call?
[ul]
[li]If inventory isn't a
major concern, you could again go with
Square... If you already have an iPad, all you need to do is buy a cash drawer and receipt printer from them and you have a working POS system (very limited, but still working and
very portable). Again, the big catch is Square's credit card rates---They are the highest I have ever seen and you have to use Square for CC if you use their terminal.[/li] Also, I don't have a clue how credit card disputes would work with Square... We have very little but that would be a concern of mine too, especially if you have expensive or high end wines...
[/ul]
I have much more (management/running/moderate programming experience) than the programming/technical side, however if you don't care too much about Apple (I know you said that in your original post):
[ul]
[li]I would again defer you back to the
Micros e7. It's cheap, works great, I know several small bar and restaurant owners that love it, and you can pick your own CC processor.
Aloha is still my favorite, but they don't cater to low budgets and really focus more on a "full table service" although, they do offer Quick Service systems. Both Micros and Aloha are fully customizable, but there also the "top end" of the POS world.[/li]
[li]Have you looked at DinerWare? I know a few restaurants that use it and are happy, but I don't have a clue on their pricing.[/li][/ul]