I have killed almost all my NE turkeys in the first 2 weeks of season. I love it but it can be frustrating for calling. I find a big flock and just pick at the edges until I convince one to break away or they happen to wander into me. If the big flock isn't where you can hunt, it can be lonely.
I've dug through snow to set my blind up that week, but usually not bad. It can get cold.
If you are in river or creek bottoms, you can sometimes just set up where they are headed and have a huge flock parade past you. If you do have birds already broken up, it can be great calling action, although its generally easier calling later in the season.