moeronn:Congrats on the invite. That's one heck of a friend you have there.
I'm heading out there in a couple of weeks and will be staying at Hideaway for a few nights. We might dive with them, but are definitely planning at least one day in Beqa Lagoon. I believe it's less than an hours drive to Pacific Harbour where a couple of dive shops operate from. I'll try to post an update when we return.
Aquatrek operate from their riverside jetty, and do trips out to Beqa Lagoon. You can't miss the CENTRA, it's the first Resort on the right as you cross the Pacific Harbour Bridge. They have a nice swimming pool there too, near the Jetty and within a holla of the bar

Don't dive with Hideaway, they'll be taking you to the same place, either use a hire car(Use Khan's Rental Cars, they're the cheapest in Fiji) or get a cab. Another alternative is the 'Bus'. But you have to be very patient, they run on 'Fiji Time' and stop every 2 minutes to pick up or drop off villagers.
DSAO
WizFromOz