We have investigated the effect of different Ion Cyclotron Resonance Frequency (ICRF) heating schemes, of error field modes, of the plasma shape and edge magnetic shear, and of the ion ∇B-drift direction on the stability of Alfvén Eigenmodes (AEs). The use of multi-frequency or 2nd harmonic minority ICRF heating at high plasma density gives rise to a lower fast ion pressure gradient in the plasma core and to a reduced mode activity in the Alfvén frequency range. Externally excited low-amplitude error fields lead to a much larger AE instability threshold, which we attribute to a moderate radial redistribution of the fast ions. The edge plasma shape has a clear stabilising effect on high-n, radially localised AEs. The damping rate of n=1 Toroidal AEs is a factor three higher when the ion B-drift is directed towards the divertor. These results represent a useful step towards the extrapolation of current scenarios to the inclusion of fusion-born alpha particles in ITER, with possible application for feedback control schemes for the various ITER operating regimes.