San Francisco, Fiji, Tonga, Samoa, Singapore

Hello dear travelers and readers, I'm doing this round trip up there in September/October. From September 24th, I will be in San Francisco, USA for five days. From there I fly for eight days to Fiji, followed by nine days to Tonga / Vava'u - snorkeling, swimming with humpback whales. Afterwards, I'll check out how people live in Samoa, after nine days it's off to Singapore for a few days before I fly back. I've almost finished booking the trip with flights and hotels/guesthouses. So the only question left is, is there anyone who is at one of these places at the same time and would like to meet, or even do some activities together? Or maybe you have insider tips? Then write to me. Best regards from Frankfurt Connie