It would be helpful to know French, Wolof, and maybe a bit of Sosse and Serrer. Beware of the high-end Belgian/French resorts at the NW end of town; they aren't the best for the community. Hike over to Soukouta at stay at Keur Bamboung, which is a eco-friendly resort run by Senegalese people. There are a couple places to get a cold Fanta, if you look hard. You can get here from Kaolack by sept-place or Ndegane-Ndiaye; look for the ones going to Karang, and ask to be let off at Toubacouta. There is a lady that sells some pretty good baignets on the other end of town, under the shade of a large tree by the health clinic. Toubacouta is a great place to get a pirogue to other parts of the delta.
