You can connect NWC to your node, but your entire family would be spending your Bitcoin.
You would still need lnbits to provide a separate wallet for each user. Then use a separate NWC connection to each users lnbits wallet.
You can already do that with lnbits and it's lndhub plug-in for wallets that support lndhub connections.
There's a bounty posted for integrating NWC into lnbits currently.