Well personally im only 18 but im going on instinct...so if you take it good if you dont..id understand....It really depends on how well your relationship is with him...if its really good then maybe ask your ex..yes i know crazy...but you two put money together in the name of your son for his honeymoon? If you cant afford it..which on disability i can understand...maybe offer to pay for like the flower bill? or just one of the vendors? Its alot less money but in the end paying off one of the vendors will help ease the stress of the Bride to be and your son...those vendors are demanding...lol....maybe get together with all of the parents...and put some money together..put aside your differences...and just put all your money together..and whatever you come up with give it to the bride and groom to be and let them decide how to use it...say its from the four of you...or 5 if you didnt include yourself....And then maybe give them a card and a little present just for them to open something nice....like a blender...or some kitchen ware? If they arent happy with that...and complain then it is not your fault that THEY have bad manners...and are being completely rude for not being happy with what they got due to all of your circumstances....Good Luck and keep us posted!!! I hope i helped alittle...