I went with Lindblad/NatGeo last year at this time (March 26-April 4, 2010) and loved it! You are actually in the Galapagos for 8 days not 10 since they consider the first day your flight into Quito or Guayaquil and the 10th day your flight out of Ecuador. We had checked out
ABD but didn't like that you're only in the Galapagos for such a short time and that was the reason for the trip to be in the Galapagos. Also, this is not a "vacation" but an expedition - you are on the go exploring the islands or snorkeling the whole time begining early in the morning with a break during the middle of the day because of the heat/sun and then back out mid-afternoon till early evening. Dinner was served at 7-7:30 pm. Oh, every night or afternoon, one of the naturalists had talks about the Galapagos
This was our schedule, sorry if it gets long
Friday, March 26th - Flight from JFK to Guayaquil - met about 8 other families on the plane that were with NatGeo/Lindblad
-spend the night at the Guayaquil Hilton
Saturday, March 27th - 8am flight to Baltra, Galapagos arrived at 10 am boarded the ship by 11:30 am, had lunch, the kids had a Young Explorer's meeting while the adults had a meet/greet, then had a safety drill, an hour rest then we were at North Seymour seeing the frigate birds & blue-footed ****ies in one of their mating sites.
Sunday, March 28th - we were on Espanola in the morning - FANTASTIC doesn't even begin to tell you how this was; in the afternoon we were at Gardner Bay for snorkeling or staying on the beach with the sea lions.
Monday, March 29th - Floreana - started at 6 am going to Post Office Bay, then Champion Islet for snorkeling or just riding around on the panga; afternoon at Punta Cormorant
Tuesday, March 30th - Isabela & Fernandina - we crossed the Equator overnight and then again later in the morning...I got up early to see Roca Redonda and saw whales; then we to Punta Vicente Roca for panga explorations and snorkeling; they had a ceremony for the kids with King Neptune (really cute); spend the afternoon at Punta Espinosa
Wednesday, March 31st -Santa Cruz and the Darwin Research Station & Park Headquarters, saw the galapagos which the islands were named after; had lunch at Hacienda Altair; afternoon went to see the tortoises in the wild and see Los Gemelos; that evening the Director of the Darwin Research came on Board and spoke to us about all they're doing as well as answer questions, we also had a Galapagos Folkloric Group come perform.
Thursday, April 1st - Cerro Dragon, Sombrero Chino, Bainbridge Islets & Guy Fawkes Islets - yep more snorkeling - this is the day that we had some very curious sea lions and sea turtles playing with us, one was swimming between my youngest DD and I-I thought that she was going to explode from happiness, oh, this is also the day that we swam with sharks
Friday, April 2nd - Bartolome & Santiago - started the day before breakfast going to the top of Bartolome, the naturalist we went with was also the naturalist that had been the escort for when they filmed "Master & Commander" so it was great to listen to him - he was also my DDs favorite so they just hung to his every word

; spent the rest of the morning at Bartolome Beach; afternoon we went to explore Puerto Egas in Santiago.
Saturday, April 3rd - our last morning there and then off to Guayaquil; that afternoon we did an excursion to see Guayaquil which was great; two of the naturalists actually came with us since they were going off to their break so they joined us and it was a great time. Some of the passengers went onto Quito but since my DD suffer from altitude sickness we didn't want to risk it.
Please remember that since they've been doing it for so long they are allowed to certain islands that others are not since the government changed the "rules" in the last year. It is my understand that an expedition company is to alternate certain islands from week to week - I have to ask DH about that since he spoke at length about the new rules with the Director of the Darwin Research Center in Galapagos (yep, the Director comes on Board with NatGeo/Lindblad when we're at Punto Ayora)
We went on the Endeavour - wonderful ship, cabins were very nice, the naturalists were fantastic, my DDs loved every minute of it.