Canal boat holiday

I am due to go on holiday on a canal boat with 8 extended family in mid September. It was booked a year ago but since then my SPMS has got much worse. I know I won't be expected to do much at all but I have started using a wheelchair inside the house after having many falls and I know there isn't room for that on the canal boat. Even going from my bed to the toilet is a problem for which I use a 3 wheeled walker but again, there won't be room for that. I have various walking sticks but they won't take my weight, they just slide o n the floor (I'm not at all big, they just can't support weight of a floppy person) I'm getting really terrified how I will be able to move at all. Any ideas for sticks or small equipment that can support me ? Any help would be much appreciated.