Advice re: Galapagos

Dear All,

I'm looking for some advice concerning the Galapagos. I'm planning a trip with my Mum, who is in her mid- to late 70s and is a bit limited in terms of her mobility. We want to make sure she has the best experience, so if anyone has advice on tour companies that are geared towards seniors and/or individuals with slightly lower fitness levels, it would be appreciated. I know what I would want to do/be capable of doing, but her needs are the priority (and I'll see birds no matter where we go...)

Thank you!

Renée