The weak-friction model of tidal interactions between stars in regularized few-body problem is applied for studying dynamics of non-hierachical multiple systems. The final state distribution and properties of binaries, stable triples and single escapers are discussed. Tidal interactions and mergers increase average and median values of binary and triple semi-major axes. These effects decrease the fraction of elongated binary systems compared with gravitational few-body problem. These factors increase the average and median masses of binary and triple systems and decrease their mass ratios. Tidal interactions and mergers do not influence the distributions of angles between spin and orbital momentum vectors in binaries and stable triples. Tidal interactions lead to the higher single escaper velocities compared with the gravitational few-body problem. Due to the tidal interactions rotation of binary and triple components is slower than that one of Main Sequence stars with the same masses. The rotational velocities of single escapers are higher than the ones of Main Sequence stars.