Why is registering such a confusing thing?

Is it just me? I can't seem to figure out where is the best place to register...Where is everyone registering? I started at Macy's but I was told to register in 2 places. Also, prices I have seen on line for my registry are different in the store. My friend has the same experience at Bloomies...What are you girls doing so you have a comprehensive enough list?

Mon 7/24 Marriott Hotel 101 James Doolittle Blvd. Uniondale

Tue 7/25 Huntington Hilton 598 Broad Hollow Road Melville