Seeing how they're subject to apartheid-type conditions under Israeli occupation, I'd imagine that there's a fair bit of crossover or equivocation: being free from Israeli occupation would mean increased personal freedoms.
If they were free from Israeli occupation, would that mean that Gaza would go back to Egyptian control, the West Bank to Jordan, and the Golan Heights to Syria? Would it mean complete independence and sovereignty for those territories? In any case, it wouldn't be from the river to the sea, since those territories are geographically separated from each other. They would have no direct access from the river to the sea.