Clio,
It's a pleasure to make your acquaintance and I'm glad you became a member of our forum.
It seems that your curiosity of the competition already has you set on coming for next year. Given that you wish to come after the 4th of July events, you should be just in time to witness many of the displays since, by just before mid July, the shows are scheduled to fire twice a week; that being Saturdays and Wednesdays until the competition comes to a climactic close.
The Panzera closing ceremony tends to take place between July 28th to the 31st, depending on how early/late it actually starts, so you can work out your week's stay for the very last week of the competition while you may simultaneously very well see 3 shows (including the last, which usually falls on a Saturday) given you come on the Saturday the week before the closing ceremony, see the display that night, then witness another show the following Wednesday and then Panzera on the upcoming Saturday. In other words, try to make it here for exactly a week before the last Saturday so you can see a maximum of 3 displays. And no, the shows do not necessarily tend to get better with time since each country has their own solely based conceptual premise in which they wish to implement their own unique display construction, but generally, all the displays are exciting in their own way, especially when waiting for that classic finale. Furthermore, the competition does, in a sense, feel more exciting towards the end since it contains more of that robust and anticipated feeling; a feeling that simply can't be withheld or ignored, which is why I recommend planning your trip for the last week, if possible..
There are a few pyros on the board as well as some potential ones, so I'm sure you can garner some form of inquisitive ideas for those particular individuals.
There are plenty of hotels (beautiful, mind you) around Montreal to stay, such as the Marriott, for example.

I'm positive you'll be going to La Ronde to see the displays, but it's recommended to go to the Silver section, but I'm not sure about the current rates, well, yet.
Anyhow, I encourage you to visit our forum more often so you can get further updates. When the schedule is released, which is either in or between December and/or January, you'll know how to organize your time more coherently.
I hope this helps.
Best regards,
Trav.
