Blythe is all about shallow water boating, jet boat heaven.  Basically no night life unless you either have a place in one of the parks and party there, or you bring  it with you.  There's no bars (drinking) on the water.   There's different sand bars and hang out spots where people go during the day and hang out if that's what you're looking for.   For your first time you may want to stay at the Best Western which is right across the river on the AZ side at the Flying J truck stop.  Not a bad spot to stay.  There's a public launch  back on the CA side right next to the  Fwy.  Mayflower and Hidden Beaches  are up river and Rivera and McIntyre are down river.  Water will be up in the morning and go down as the day goes.  Sand bars will start popping up so keep an eye on the water.  Lots of places to eat in town.  If your a  camper, Mayflower will be your spot.  It's a county park, at least that would be my suggestion.  Mac also has camping too though.
http://book.bestwestern.com/bestwestern/US/AZ/Ehrenberg-hotels/BEST-WESTERN-Desert-Oasis/Hotel-Overview.do?propertyCode=03115

Thanks guys. This helps.

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