A weekend should be long enough for you to realise just how limiting using a single focal length can be! Footzooming is all very well but isn't always possible, when your back's against the wall or close to deep water/ steep drops or when you're close to a steep drop in front of you.
When I first got into photography, all I had was a Pentax S1a body, a lightmeter mounted on the prism and a 50mm f/2 prime. Over a few years, I built up a small selection of other primes but always hankered after a Vivitar Series 1 zoom 70-210 which I could never afford. I now shoot almost exclusively with zooms (which give me a range of 12mm up to 300mm over 3 lenses) although I do on occasion use primes should I need to - an 8mm fisheye, a 50mm f/1.8 for low light and a 105mm for macro. I also have a 90mm macro and a 180mm f/2.8 but they're on long term loan to a friend. She's also from a primes only background but picked a Cosina 19-30 zoom from the 3 lenses available to play with on my D70 which she's also borrowed.
By all means try using only the 50mm for a while but carry a walkabout zoom just in case you get frustrated with the limitations - it could put you off photography for a while.
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