Fortbyte # 06 – Accessible w/ Yay Emote At An Ice Cream Shop is located near the kart track. You must do the yay emote in front of it in order to collect it. So set the yay emote first:
Then head over to this map location in the desert and enter the building:
Enter the softdeez ice shop and go to this counter, use the yay emote and collect Fortbyte 6!