Well, you do not mention when you are in the area. The Japanese do not come into the Guadalcanal area until Spring/Summer of 1942, and at that, it is a light presence. The Battle of the Coral Sea occurs during that time frame. Then the US lands on Guadalcanal 7th August 1942, and it is September 1942 before the Japanese begin to decide their approach to the area and the Tokyo Express fires up. By the end of the year, it is basically over, and by the end of January, the Japanese presence there is basically gone. The US then migrates up the chain, as other operations also begin, such as MacArthur advancing up New Guinea. Plenty of traffic all over the region, but it is time-based as to when you'll see it. Also, it is easy to miss the battles. However, The Slot and Iron Bottom Sound are rather busy on an almost daily basis from September through December 1942...