If you enjoyed flying before, you still will, regardless of changes that you'll see. The more things change, the more they stay the same - holds true here as it does everywhere else, even with the interesting new things you'll probably see, it's still the same game built on the same foundation. I think what you'll notice most IMO is just a bunch of new unfamiliar names, everything else will come back quickly like riding a bike.
Congrats on being selected in the commissioning program - as others have said, there are other Naval Academy students playing. Skuzzy recently said the game is designed to work with 28.8k modems, so I'm sure at any school today you'll be fine - as stated, variance and stability is far more of an issue than rate/speed anyway.