The evening in Riccione usually begins in the premises of the Marano, 4 rooms with free entry that are located on the beach between Rimini and Riccione, where you can have dinner and dance under the stars.
Before telling you about these places, a premise: while the Marano area is located on the beach in the heart of the tourist area, perfectly reachable on foot or by bus line 11, all the clubs are located in the hills, therefore they are not reachable on foot but with own means, with the shuttles made available by the discotheques themselves or with the Blu Line (night bus that connects all the discos).
There are four rooms next to each other on the beach of Riccione in the area where the Marano river flows into the sea, that is to say on the Riccione beach which borders Rimini. Each restaurant has its own identity and responds to a certain type of clientele:
Hakuna Matata Plus
it is elegant and frequented by an adult clientele,
Mojito Beach Cafè
it's a young and sparkling place,
Opera
is
Beach Cafè
they are frequented by people of all ages.
That said, my advice is to take a one-night tour of all the premises so you can find the one you like best.