They each took up about half a day. Baths was fun, just very crowded. You had to wait around every turn. Booked through Disney. Start out on one beach, go through the rocks, end up on a really neat second beach, I think Devils Bay? I saw some folks taking little boats to Devils Bay and then swimming onto the beach - that looked really fun. Devils Bay had rocks that had been hallowed out where the water comes in and out.
Magnens is a very quiet beautiful beach. You take a little bus, go to the top of a mountain to get a picture - the guides on the bus could care less. There are people there at the top of the mountain selling stuff, a guy with a goat, very touristy. You then go to Magnens. I don't think we saw a fish over 1 inch all day. The water is very nice, clean, and absolutely no waves. You can go pretty far out as it is shallow. I think the number of people who have visited have stomped out any marine life. Little shop sells stuff and there is a place to eat/drink/waitress on the beach for drinks. A day at the beach. I don't quite remember but I think both were in the 930 to around 1 time period.