Cayana Airstrip (AAJ) is a remote interior airstrip in Suriname, and the honest answer to does Cayana have an airport lounge is no: this is a small bush strip serving the interior, not a terminal building with departure facilities in any conventional sense. Interior Suriname flights of this kind typically involve little more than a landing strip, a small shelter, and a wait in the open air for your aircraft, rather than anything resembling a lounge.
Travellers flying into or out of Cayana on small interior aircraft should expect basic ground-side conditions: limited or no seating under cover, no food or drink service, and no Wi-Fi, since these strips exist to connect remote communities rather than to process passenger volumes that would justify a lounge. Bring water, sun protection, and patience for schedule changes, which are common on interior Suriname routes given weather and aircraft availability. This pattern is typical of interior Suriname aviation generally, where small operators serve villages along the rivers and in the rainforest interior rather than operating anything resembling a commercial terminal. Flight timing at these strips is often set day-of, based on weather and passenger loads, rather than a published schedule you can plan a lounge visit around.
The real airport lounge picture for this part of Suriname sits in Paramaribo, at Johan Adolf Pengel International Airport (PBM), the country's main international gateway. Even there, lounge provision is modest compared with major regional hubs, but Paramaribo is where any airline, credit-card, or Priority Pass-style lounge access in Suriname would actually be found, rather than at a remote interior strip like Cayana.
If your itinerary includes an interior flight through Cayana, plan for open-air waiting and no on-site facilities, and save any expectation of a genuine lounge for your connection through Paramaribo. Confirm current conditions with your interior carrier before you travel, since schedules and ground facilities at small Surinamese airstrips can change with little notice.