Welcome - is it Benjamin?
I second the statement that plenty of RRs love the water - mine does! In fact, about the only time he really "fetches" is in the water! He trembles until we chuck a stick in and then he dives in after it (not very graceful, but he has fun

). He'll swim out, grab the stick, swim back, then climb out of the water and run away with the stick.
RRs may like water, but they are not retreivers. From my experience, if an RR chases and picks up something you've thrown for it, the goal is not to bring it back to you but the KEEP IT AWAY from you! My boy LOVES to be chased, and he only ever wants a ball or a stick if he thinks I want it. Be prepared to run around and duck and dodge a lot - it's a favorite game around here.

If you stop showing interest in the toy, most likely they will to. I always kind of liked it that way - it's like the goal of the game for my dog is to play with ME, not obsess over a tennis ball (like a lot of labs I know - no offense!).
RRs are PEOPLE dogs, not only do they have to be with you at all times, but they have to have their nose in everything you're doing, and they want YOU to be equally interested in them. Very interactive companions.
Best of luck with your new pup - please share pics when you have some! Do you know if you're getting a male or a female? Pet or show? What fun - I'm envious!

~Natalya