It's debut time for the P-121 at the winery. I'll let you all know how it goes (went, depending on when you read this)
I'm just bringing the P-121, and one small amp to sing through .... either a Bose S-1pro, or my Boss Acoustic singer. I'm partial to the Boss, because it has a harmonizer, and looper built in. I might feel like using the "icing" if the right moment arises.
For the most part, I expect to play straight Piano, with the added "fluff" of the Bass/Drums for some spice.
I'll post my feelings after the weekend.