I would look at airport lounges. buying access is pretty affordable.

Also, if retired military look for a USO lounge.

There are a few "clubs" that allow you to buy a membership to various affiliated airline/airline alliance clubs at major airports.

Look at deals on various credit cards for good deals on lounge access.

+ I see lots of signs around our various pilot lounges warning that it is a SIDA area/Sterile area. Badging required. I wouldn't risk a fine, or an ass chewing by management.