It's very hard to say. The lap bar literally swings over u from one side to the other as opposed to towards you from in front. This 'could' make it easier, but then again depending on your weight distribution when sitting could also hamper the ability for it to lock in the required amount. Keeping in mind some rides need to 'click' in more than one level, not just the first click, to be able to be launched
I'd advise calling the park and seeing if their is a weight limit for the ride first & foremost, and if not or you are within that limit, maybe arrive at the park early so u are amongst the first few riders so if u cannot ride u won't be having to get off/ejected in front of a packed queue house, which by the way shouldn't be seen as embarrassing or mortifying. I've seen in happen before, commonly in Scooby, as their is a max total weight for the carriage, and as I mentioned earlier, a required number of 'click in' levels before the operator can launch the ride