We have done TRex 3 times, our kids love it and the food was decent, never any problems - but honestly we wouldn't go there without the kids. It is noisy, but then a lot of Disney restaurants are noisy.
DD & I are trying Bon Voyage Breakfast on our 'off' day too, but we're trying a later breakfast/brunch time at 11:30 so we can sleep in if we want to, or grab some POFQ beignets to tide us over. We're planning to either take a Lyft/Minnie Van to Boardwalk, or bus to HS and then boat to Boardwalk. After we are planning to explore Boardwalk a bit and then going from there to Winter/Summerland for some mini golf.
We've done 'Ohana breakfast 3 times, so looking we're to do something different. 'Ohana was good, but last time it was more 'meh' compared to the other times. If you like Lilo and Stitch, and Pluto... 'Ohana is great for that.