Do you think my cousins are unconsiderate to their mom?

Anonymous

Oneof my male cousin birthdays is in 15 days and he will turn 50. Her sister (my other cousin) are planning something for him but since she does not get along with some other relatives for quite a while now (more than 5 years) she won't invite these relatives to the celebration she plans to do to her brother the only relative she will invite and take into account are the only relatives she and her family gets along with, and that means me, my mom, my brother my sister, her and her husband period. she will also will invite some of her friends who also are friends of her brother at the same time.

Since it is her brother 50s. my cousin was given as a gift a boat ride for the whole day (it is like a small yacht not very fancy though), some of the clients my cousin works for will give him this gift and pay for half of it the rest of the payment the guests will pay. The boat is all inclusive (snacks, lunch, 4 beverages). But then there is the issue of my cousins mother, sh eis in a wheel chair due to a knee condition in one of her legs and for some years now it is impossible for her to walk. For my aunt to go to this trip, the yacht or the place the yacht is docked to the pier at least needs a ramp so the wheel can run and get into the boat, if the yacht cannot be docked in some pier and guests need to use a small dingy first to step inside the yacht my aunt won't be able to go to this trip for the difficulty of her in a wheelchair. Guess what? My aunt` children (my cousins) never thought of their mom condition first, before planning and accept this gift cause Im sure they want their mom to go.

My mom who is also an elder person like my aunt, told me she won't go if her sister won't go cause she will get bored and lonely being the only elder there even if the ones going are friends and relatives but they are not her age anyway and it cannot be comfortable.

Updates
2 mo
But by mom not going, I won't go either or my brother because we cannot let my mom alone at the house for the whole day from morning until night, my married sister and her husband who are also invited, they can't go to this trip cuse they have already a prior committment that day.

So you see, by my aunt not going the boat, this birthday plan can fall apart but her children did not think of her mom first they only thought about having fun and do a different thing (other than a usual get together
Updates
2 mo
at some restaurant or venue) to celebrate my cousin 50.
My aunt told me she already asked her kids if the boat has some facilities for handicapped people but at this moment, her kids has not given her mom an answer.
Do you think my cousins are unconsiderate to their mom?
1 Opinion