Before i bought many pieces of furniture just in the very recent past, i called Wayfair Customer service to inquire about the state of the the furniture (ie assembly details involved ). I am very much a senior      (75 ish) female and was worried about strength and ability to put furniture together by myself. I explained this to to the service person. He immediately reassured me that all the pieces would arrive partially assembled and very little would be involved in the « putting it together ». I’m certain you will be able to do it, no problem » 
Yikes X 10 !!! Im sitting here in my living room , feeling despair and overwhelmed to say the least! What can I do? Should i return most of the pieces? I did put one end table together bu it took me several hours . I have one more matching one to go. I just can’t tackle the others. HELP.