As a starter to explore ferry services, go to the Ferryhopper.com and punch in your route searches. Note: air travel between islands is not generally good. Air travel is normally only feasible between Athens (or other mainland destinations) and the island in question. Some exceptions do exist – Rhodes Kastellorizo, Kos-Leros-Astypalaia, Thessaloniki-Limnos-Ikaria etc. but again you will need bookings weeks in advance.
Computers also allow airlines to predict, with some accuracy, how many passengers will actually fly after making a reservation to fly. This allows airlines to overbook their flights enough to fill the aircraft while accounting for "no-shows", but not enough (in most cases) to force paying passengers off the aircraft for lack of seats, stimulative pricing for low demand flights coupled with overbooking on high demand flights can help reduce this figure. This is especially crucial during tough economic times as airlines undertake massive cuts to ticket prices to retain demand.
I think it depends on where you live when it comes to expensive holidays, and what sort of accomodation you want. I’m from London and went to the Maldives in oct 2010 2 wks all Inc, £1150. Which was a bargin as previous years I been to Spain spending over £100 day on food and drink etc. I went to the addu atoll on the island of gan which is the most southern chain of islands. The hotel was everything I could have dreamed of, it wasn’t posh or extravergant but who cares when ya in the Maldives. Another great reason to go to the addu atoll is that when the British were there they built bridges and causeways connecting the south and west islands which means u can get on a bike and go and meet the locals, they were so friendly and I recomend the addu atoll to anyone !!!!!
As you head south, high-rise resorts give way to stretches of golden sand, such as Glystra, Tsambika, and Fourni. Inland, you'll find alpine forests (Mount Attavyros), hilltop castles (Monolithos), faded frescoes (Agios Nikolaos Foundoukli) and ancient ruins (Kamiros). Marooned on the southern tip, Prasonisi is a powdery peninsula where the Aegean meets the Mediterranean. One side is calm, the other choppy - a metaphor for this island of two halves.
Since airline reservation requests are often made by city-pair (such as "show me flights from Chicago to Düsseldorf"), an airline that can codeshare with another airline for a variety of routes might be able to be listed as indeed offering a Chicago–Düsseldorf flight. The passenger is advised however, that airline no. 1 operates the flight from say Chicago to Amsterdam, and airline no. 2 operates the continuing flight (on a different airplane, sometimes from another terminal) to Düsseldorf. Thus the primary rationale for code sharing is to expand one's service offerings in city-pair terms to increase sales.