Hi Sue,
I did this trip last year but a week later (15th Sept) and the weather was pretty good but not too hot - the first day was very wet but it brightened up late afternoon and was gorgeous for the rest of the week. I went on 4 of the 5 trips (didn't do the Cliffhanger lunch) and enjoyed them all although the lake tour was done during the pouring rain so we didn't see the surroundings at their best. Don't let that put you off though - I'm sure that won't happen again! I thought that the Ramada hotel was very nice (it's quite new) - the only downside of it is the location, there's nothing much nearby. If you go on all the trips though you won't have much time to explore anyway, and you can always use the shuttle bus to go further afield.
I hope this information is helpful but feel free to ask more questions! I would definitely recommend this holiday, I'm sure you won't be disappointed.
Karen