From the looks of it, especially given how much she's distracting the redhead, the barmaid is likely to come first, and likely by a fair bit, if her lusty moans are any indication, thrusting back hard and fast against Chess' thrusts, panting heavily, while the half-orc, clearly aroused, is only moaning lightly, especially as the redhead has moved back to just using her fingers instead of her tongue, to allow her to thrust back more easily.