Does restoring wallet.dat require the same paths and configs in servers? I have a Bitcoin core server (Server 1) which is working well. Now I am testing backing up and restoring its wallet on a new server (Server 2).
Imagine that the server 1 has these configs:  

blocksdir=/btc/blocks
datadir=/btc/data # wallet.dat file is here in  the wallets directory


Now, I want to move the backup file (wallet.dat) to the new server which its default paths are like this:  

~/.bitcoin/wallet.dat
~/.bitcoin/blocks



Do I need to have the same paths in the server 2 for data and block directory as the server 1? Or can I move the backup file to the default path of wallet.dat in server 2?
Should I copy the download blockchain from the server 1 and move them to server 2 too?
A wallet.dat file contains no information specific to a particular install of Bitcoin Core, or its configured data and wallet directories.

You can freely copy just the wallet file to another instance, without having to copy the block data or other information such as peers, mempool, etc.