We have returned from recent 8 night stay at the Four Seasons Seychelles. DH, myself, DS1 (2 1/2 yrs old) and DS2 (six months). Upon our request prior to arrival, the hotel provided us, free of charge with: alcohol-and fragrance-free baby wipes, Pampers, 2 Graco strollers for our use during our stay, car seats in the airport transfer car and in the taxi that took us on the Mahe island tour, secure metal cots with Mothercare cellulose blankets, a baby bath-tub and plenty of baby toiletries.
The Kids Club is beautiful and has a great collection of childrens story books, craft materials, puzzles, etc. The staff, however, REFUSE to interact with your child if your child is below 4 yrs old. Just a warning. An Indian couple left their 3 and 1 yr old DDs there for 2 hrs and the staff simply surrounded them with soft bean bags and left them.
There is babysitting available, babysitters are local Seychelles ladies. DH and I didn't get a very good vibe from them, but the German couple with young kids felt differently and we often saw their kids with the babysitter.
The kids menu on the room service menu is quite good, even the fish fingers are made by the chef.
My tip: if you need diapers/nappies while in Seychelles, the brand called Little Angels is excellent quality and much cheaper to buy in local supermarkets than Pampers, etc.