First off welcome to RVForums. Pretty good folks here who for the most part want to help. One suggestion is to fill out the information for your RV and tow vehicle. Sometimes it makes it easier for the community to answer a question.
We do not have Good Sam, dropped it many years ago.
We have a diesel MH and use the TSD Fuel discount card almost every time we fuel up.
We have FMCA primarily for roadside assistance.
We also have a KOA discount card, only because we frequent a KOA in E TX.
We are dropping Passport America and Harvest Host when they come up for renewal, simply because we don't use them.
Simple question is, does it make sense for your RV lifestyle?