Finally was able to check out Mary O'Neill's. The location is a welcomed addition to bring some more options to Waxhaw for food, drinks and fun. The bar is gorgeous, nice pub atmosphere that reminds me of Europe, but it is very small - so I understand why it's been so crowded all the time.
Wife and I went in early during the week and were seated quickly - the next part lost a star for this review - we were brought water quickly, but then waited about 10 minutes with no other interaction from the staff. So we went up to the bar instead.
The bartender was very friendly and helpful - though he was incorrect about the chicken tenders being fresh - they are just frozen. That with the high beer prices dropped the second star.
We started with the Fondue - and it was pretty good - the texture is a little gritty but it had a good flavor with the warm chips. The tenders were very boring - standard frozen chicken tenders. The fish and chips was pretty tasty though - the piece of fish was HUGE!
The batter is the traditional fried breading. The fish was cooked well - moist and hot and not at all dry.
We might try dinner again if they aren't busy but the bigger appeal is the wonderful bar atmosphere.