I'd online check-in yesterday for my EWR-SFO flight and I was a bit surprised when I got to EWR that they did not have anyone dedicated to the Bag Drop line at Premier Check-in. Given that it is a holiday weekend, they basically merged all of 1k, Premier and Bag Drop into one line. I unfortunately had to check my bag due to liquids (oddly transporting wine from Spain to SF), so I was annoyed to wait half an hour at Premier Check-in to just unload my bag. There was a sign for Bag Dropoff, but the woman at the Premier area told us that there was only one line for all Premiers. I guess I am just surprised by the short staff for a holiday weekend.