During the high summer season (but also normally), you can find lot of "Street Players".
Those people try to convice you to guess where is a ball under 3 glasses on a table, of course you play with money, not for free.
If you are lucky, you can get it 1 time, maybe 2, but i promise you are going to loose a lot of money if you play that game. Suddenly when you play you will have a lot of other people around you (maybe friends of the "play owner") that are trying to confuse you, and maybe, who knows, pick your pocket.
Stay away from those players and simply ignore them.
Beach goers can accuse me of serious offence here but I consider Rimini beaches a tourist trap. OK, don't shoot me now that I've said this ;-)
The 15km (or 25km as some say) of beaches sounds impressive but being assigned a place in a row of deck-chairs was not my idea of a beach, particularly if I don't like the company around me and there's no other place to go. The stone reefs that create little bays for children make the water literally stink, and that's not pleasant at all.
I am talking about the beach in the Rivabella quarter, don't know about the other ones. I could not be bothered to check them, preferred to splash around in the hotel's swimming pool. Didn't care much for sunbathing, there was too much to discover in the town of Rimini.
Rimini since july to the end of august is really overcrowded, locals full of people, seaside where you must kick someone if you want to lay down, ques for a beer.
Unique Suggestions: If you end up in Rimini in summer, and you want to escape the crowd, just try to go to San Leo or for example, miramare beach, as it is not so central, it is a bit less crowded.
Fun Alternatives: Go since april to june and you'll have the best time.
don't go eat in one of the restaurants on riminis mainstreet, it was expensive and there was nothing on the plate.
(my friend trying to get some extra money)