Went to the Hamptons for a brunch date last weekend. We were seated immediately by a friendly hostess and had a waiter at our table for drinks within two minutes. The service was prompt and friendly throughout the meal, but we switched waiters before even ordering food. It was a little odd to have a new waiter come to our table and help us while our previous one stood around and waited on a single table, and it seemed like there might have been too much staff on shift.
Their endless mimosas or bloody Mary's are a good deal at less than or right around $20. They're not super special or different than any other mimosa, but they did offer a flavor variant if you wanted. I've got to say, my waiter was QUICK on the refills... as in, he'd bring me one before I was done. Not a bad thing!
For food, I got the chicken biscuit. It tasted good but I felt like I needed to scarf it down before the gravy soaked everything and made my meal mush. My date got the short rib sandwich, which was delicious but a bit messy. Portions were great and it didn't take long to arrive.
I would definitely return for dinner or even another brunch. The venue is lovely and upscale but trendy and the staff was all friendly. I personally think they could be better organized, as the staff seemed continuously confused over who had what table, but overall I'd recommend trying it.