You want to make sure that wherever you use them-make sure the bill is over $34 per person (that's what one wish is worth).
Therefore, any of the dinner shows ($49) and places like fantasmic dinner package at HBD (around $36 or 39 can't remember which) are worth it. Character breakfasts and buffets usually are around $20.00 each-so not good value for your wish buck. We usually use 2 wishes each for La nouba (love that show) and have one two wish dinner (Cali grill to watch wishes for example).
Also not good value-1/2 hour water mouse rental costs about $25.-great value parasailing about $80 per person.