And they’re off! Thoroughbred Hamptonites get the East End “social season” up and running with the eighth annual “Midsummer Night Drinks” at designer Elie Tahari and wife Rory’s beachfront home in Sagaponack (oh, we wish it were midsummer, but we don’t wish we were in Sagaponack!) in honor of AIDS charity God’s Love We Deliver. Later, those who prefer their crowds of people sweaty and stoned speed to Jones Beach to see catchy indie heroes the National play with Modest Mouse and the grown-ups of R.E.M. Which reminds us: We are so not going to our high-school reunion.
[Midsummer Night Drinks, Elie and Rory Tahari’s home, 6 p.m., 212-294-8143; R.E.M., Modest Mouse and the National, Nikon at Jones Beach Theater]