You need to do the math on this yourself. Figure out the approximate cost of point to point tickets

Hello all, I am looking for some advice for the Europe section of a rtw trip my family coach tours uk and I are taking in 22 months. We would arrive in Instanbul around the end of April and our current plan is to make our way across the Northern Mediterranean to Spain and then head inland back East to Austria, North to Denmark and then finish in the UK. We have three months and four in our party (my wife and two children ages 10 and 12 at time of travel). We would like to use trains and ferry services especially coach tours uk to explore some of the Greek Islands. Would buying a eurorail pass be best? Approx cost is $7000 for three months. Any other advice?
You need to do the math on this yourself. Figure out the approximate cost of point to point tickets and then the price of a pass. If you decide the pass is the most cost effective then consider the 15 day within 2 month option as I'm sure you'll stay in each place for more than a day.
If traveling that much some kind of railpass makes sense - but perhaps a Eurail Flexipass where you get X number of day's unlimited travel over a 2-month period. You would not find a pass beneficial in Turkey (even though it is now a Eurail country) or Greece so start your 2-months coach tours uk when in say Italy and use it till you go to the IK - where Eurailpasses are not valid - see if you can fit that into a 2-month period.
A flexipass lets you stay in a base several days and then covers the long-distance travel days between bases. The 10-year old would pay 50% of what the adults pat - under 12 unfortunately is the rule - a Saverpass is putting theother three names on one pass.
Keep in mind that for folks over 25 Eurailpasses are first class and IME of decades of incessant European rail travel there are definite plusses to first class - especially for 4 people - usually lots of empty seats IME vs an oft full or fairly full 2nd class. Lots more room for baggage, bigger seats, etc. So when comparing coach tours uk the cost of tickets keep in mind the pass is for first-class travel.
From Istanbul, you would fly to Spain. There isn't a ferry from Istanbul to Spain. Greek ferries around the islands would not be included with a pass, nor would any accommodations on other ferries. Example: coach tours uk there is a ferry from Patras, Greece to Bari or Brindisi, Italy. A pass would give you deck passage only (off season - in season you would have to pay a supplement) and not even airline seating. This is an overnight ferry so it's likely coach tours uk you would want a cabin (not included in any pass). It's much cheaper to fly. There are dozens of budget airlines in Europe, but you do have to pay attention to the strict luggage weights.
A Eurailpass would save you abougt $100 or more on that 'deck passage' - sleeping accommodations are extra but can be just a few euros in a so-called Pullman seats or not that much really for berths so a railpass valid in Greece and Italy would save you a lot of bucks just on the ferries covered even if you must pay a small amount for a sleeping berth - much cheaper than a hotel anyway on these overnight services that would IMO be a great fun experience for the whole family - lots of things onboard - kind of like a cruise coach tours uk ship.
but this has little to do with the value of a pass as they cost between 3 and 10 euros usually and in many countries you are going to you can simply hop on any train anytime - like in Austria, Switzerland, Germany, Denmark, Netherlands, Belgium and eastern Europe - just a handful of countries demand seat reservations to say in a generality that many services require additional payments should have say in a few countries that is true but not in most countries.
coach tours uk Seat reservations are not required on every train in every country and has been mentioned, you really need to do a lot more research before simply deciding a pass is not any good or that point to point tickets are always better or just how much, if any, budget air flights might be fitted in.