Am I being unreasonable to feel 
and 
at a wedding that consists of the following (groom is old uni friend of DP):
-Location is a popular far-east holiday destination, in a year's time
-Will require two flights to get there
-Guests are expected to pay for 5 nights accommodation in multi-bedroomed villas which totals £350 pp B&B (so £700 for me and DP)
-We have to pay a deposit NOW as the venue is apparently asking for half the cost upfront
-It has been made clear that the wedding is going to cost £13,000 but in actual fact the intention is that this will be covered by guests
-We have to pay £32.50 pp to cover the cost of the reception, and this doesn't include drinks
I am also peed off that DP has told his friend that he will go but doesn't know yet whether I will be going too (although DP hasn't paid the deposit yet - not sure if he will actually go now we are getting more information about what it is going to actually cost!!)... but that is a different story.